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X-WR-CALNAME:Particle Physics Theory Seminars
X-WR-CALDESC:Particle Physics Theory Seminars
X-PUBLISHED-TTL:PT12H
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/London
X-LIC-LOCATION:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
DTSTART:19810329T010000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
TZNAME:BST
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BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
DTSTART:19961027T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
TZNAME:GMT
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BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85862@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250710T082946
LAST-MODIFIED:20250830T101349
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20250902T153000
DTEND;TZID=Europe/London:20250902T173000
SUMMARY:4pm - 5pm: A Superalgebra Within:  representations of lightest st
 andard model particles form a Z_2^5-graded algebra
DESCRIPTION:It is demonstrated how a set of particle representations\, fam
 iliar from the Standard Model\, collectively form a superalgebra.  Those 
 representations mirroring the behaviour of the Standard Model's gauge boso
 ns\, and three generations of fermions\, are each included in this algebra
 \, with exception only to those irreps involving the top quark.  This sup
 eralgebra is isomorphic to the Euclidean Jordan algebra of $16\\times 16$ 
 hermitian matrices\, $H_{16}(\\mathbb{C})\,$ and is generated by division 
 algebras.  The division algebraic substructure \n\n(1)  enables a natur
 al factorization between internal and spacetime symmetries\, and   \n\n(
 2)  allows for the definition of a  $\\mathbb{Z}_2^5$ grading on the alg
 ebra.  \n\nThose internal symmetries respecting this substructure are fo
 und to be $\\mathfrak{su}(3)_C \\oplus \\mathfrak{su}(2)_L \\oplus \\mathf
 rak{u}(1)_Y\,$ in addition to four iterations of $\\mathfrak{u}(1)$.  For
  spatial symmetries\, one finds multiple copies of  $\\mathfrak{so}(3)$.
   Given its Jordan algebraic foundation\, and its \\it apparent \\rm non-
 relativistic character\, the model may supply a bridge between particle ph
 ysics and quantum computing.\n This talk is intended to be accessible to s
 tudents.  Everyone is welcome.\n\nSpeaker:\n* Nichol Furey (Humboldt Univ
 ersity)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85862-4pm-5pm-a-superalgebra-withi
 n-representations-of-lightest-standard-model-particles-form-a-z25-graded
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85864@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250710T083550
LAST-MODIFIED:20250904T095726
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20250910T123000
DTEND;TZID=Europe/London:20250910T133000
SUMMARY:1pm - 2pm: Differential Equations for Energy Correlators in Any An
 gle
DESCRIPTION:Energy Correlators (EC) are the simplest IR finite observables
  that measure the distribution and the correlation of energy flow in a p
 articular direction\, which connect theories and experiments. \n\nFrom a
  phenomenological aspect\, they can be used as event shape or jet structu
 res to further study properties of Quantum Chromodynamics (QCD) or even n
 ew physics. I will introduce a systematic algorithm to calculate the
  canonical differential equations for energy correlators at generic angle 
 in N = 4 super Yang-Mills theory. Applying the algorithm\, we obtain the 
 canonical basis for three-point EC and the full set of master integrals f
 or four-point EC. For four-point EC\, based on differential equations\, 
 we find two elliptic curves and one genus 2 hyperelliptic curve by Picard-
 Fuchs operators.\n\nSpeaker:\n* Rourou Ma (Max-Planck Institute)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85864-1pm-2pm-differential-equatio
 ns-for-energy-correlators-in-any-angle
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85896@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250714T094853
LAST-MODIFIED:20250911T092326
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20250917T123000
DTEND;TZID=Europe/London:20250917T140000
SUMMARY:1pm-2pm: Black holes and false vacuum decay
DESCRIPTION:It is a common wisdom that impurities and inhomogeneities can 
 accelerate first-order phase transitions and false vacuum decay. Black hol
 e is an interesting example of spatial "impurity" and a source of quantum 
 Hawking radiation. It is important to calculate accurately how black holes
  catalyse the decay of a metastable state\, since our current\, low-energy
  vacuum of the Standard Model is itself metastable\, and since many cosmol
 ogical models predict abundant production of small\, hot primordial black 
 holes. The challenge is that an evaporating black hole is not in thermal e
 quilibrium with its environment\, and standard Euclidean methods of calcul
 ating the decay rate are not justified. I will discuss progress made in ca
 lculating black hole induced vacuum decay from different initial states us
 ing toy models of dilaton black holes in two dimensions. In particular\, I
  will show that the non-equilibrium initial state decays exponentially slo
 wer than the equilibrium one and its decay rate is exponentially suppresse
 d at all black hole temperatures. This is expected to be true in four dime
 nsions as well\, and the precise suppression factor remains to be calculat
 ed.\n\nSpeaker:\n* Andrey Shkerin (Perimeter Institute)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85896-1pm-2pm-black-holes-and-fals
 e-vacuum-decay
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85866@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250710T083724
LAST-MODIFIED:20250922T214019
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251001T123000
DTEND;TZID=Europe/London:20251001T143000
SUMMARY:1pm - 2pm: Determining the Structure of the Pion from Lattice QCD
DESCRIPTION:We investigate the hadronic structure of the pion utilising th
 e Feynman-Hellmann (FH) theorem. The Compton amplitude of the pion is diff
 icult to evaluate due the systems susceptibility to noise when boosted to 
 higher momenta. To overcome this\, we employ the noise reduction technique
 s of momentum smearing and all-mode averaging. As an initial test of these
  techniques\, they are first applied to elastic scattering. This allows th
 e form factor of the pion to be determined at a higher momentum transfer t
 hen previously achieved utilising the FH theorem. We also present recent p
 rogress investigating the Gross-Llewellyn Smith (GLS) sum rule for the pio
 n.\n\nSpeaker:\n* Jordan McKee (Adelaide University)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85866-1pm-2pm-determining-the-stru
 cture-of-the-pion-from-lattice-qcd
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86011@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250825T144754
LAST-MODIFIED:20251002T081110
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251006T123000
DTEND;TZID=Europe/London:20251006T143000
SUMMARY:1pm - 2pm: Quarkonia Production in Modified NRQCD
DESCRIPTION:Non-Relativistic QCD (NRQCD) has been used with considerable s
 uccess for understanding charmonium production and decays but the true tes
 ts of NRQCD -- the parameter-free predictions that rely on the heavy-qua
 rk symmetry of the NRQCD Lagrangian viz.\, the polarisation of J/psi and
  psi' and the prediction of the eta_c cross section -- fail miserably to c
 onform with experiment. This has provoked us to propose a modification of 
 NQRCD where we invoke soft\, perturbative gluon emission from the intermed
 iate colour-octet c c(bar) states. This model is able to i) provide very g
 ood fits to Tevatron data on J/psi\, psi' and chi production\, ii) provide
  parameter-free predictions for J/psi\, psi' and chi production which are 
 in excellent agreement with the data from LHC\, and iii) provide a complet
 e resolution of the LHCb eta_c anomaly. Results on bottomonium production 
 at the LHC and on quarkonium production in nucleus-nucleus collisions will
  also be presented.\n\nSpeaker:\n* Krishnamoorthy Sridhar (Azim Prenji Uni
 versity\, Bengaluru)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86011-1pm-2pm-quarkonia-production
 -in-modified-nrqcd
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85925@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250724T110436
LAST-MODIFIED:20250929T104147
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251008T123000
DTEND;TZID=Europe/London:20251008T143000
SUMMARY:1pm-2pm: Flavour physics at the precision frontier
DESCRIPTION:Flavour physics provides an excellent framework for indirect 
 searches for physics beyond the Standard Model. Such searches require both
  high-precision experimental measurements and equally precise theoretical 
 predictions. In this talk\, I will focus on the theoretical side of b->sll
  transitions\, which poses significant challenges due to the non-perturbat
 ive nature of low-energy QCD effects. I will also discuss current strategi
 es for overcoming these challenges and outline future prospects in the fie
 ld.\n\nSpeaker:\n* Nico Gubernari (University of Cambridge)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85925-1pm-2pm-flavour-physics-at-t
 he-precision-frontier
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85927@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250724T173632
LAST-MODIFIED:20251006T201506
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251015T123000
DTEND;TZID=Europe/London:20251015T143000
SUMMARY:1pm-2pm: Can SMEFT discover New Physics?
DESCRIPTION:The Standard Model Effective Field Theory (SMEFT) provides a s
 ystematic\, model-independent extension of the Standard Model through high
 er-dimensional operators\, enabling collider data to be interpreted in the
  presence of heavy new physics. In recent years\, global SMEFT analyses ha
 ve achieved substantial progress in constraining the parameter space\, yet
  their discovery potential remains limited by the problem’s high dimensi
 onality and by the requirement to fit all operators simultaneously. In thi
 s talk\, I will present a novel strategy that re-casts SMEFT fits into an 
 optimised\, discovery-oriented framework. The approach combines Bayesian m
 odel selection with genetic algorithms to efficiently navigate the space o
 f operator subsets\, identifying deformations that improve agreement with 
 data while minimising model complexity. I will demonstrate the method usin
 g current LHC and LEP measurements as well as future collider projections\
 , and validate its performance through closure tests with injected UV sign
 als. The results show that SMEFT\, when equipped with model-selection tech
 niques\, can act as a genuine discovery tool\, pointing to the regions of 
 parameter space where indirect signs of new physics are most likely to eme
 rge.\n\nSpeaker:\n* Luca Mantani (Valencia University)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85927-1pm-2pm-can-smeft-discover-n
 ew-physics
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86159@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250923T135142
LAST-MODIFIED:20251017T140708
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251022T123000
DTEND;TZID=Europe/London:20251022T143000
SUMMARY:1pm - 2pm: Multiloop amplitudes for four-particle scattering with 
 one off-shell leg
DESCRIPTION:Multiloop and multileg scattering amplitudes are key ingredien
 ts for achieving higher theoretical precision ahead of the high-luminosity
  run of the LHC. In this talk\, I will present recent results on three-loo
 p Feynman integrals and amplitudes for vector boson + jet and Higgs + jet 
 production in the heavy-top-mass limit at hadron colliders. I will also di
 scuss the computational advances underlying these calculations\, including
  the derivation of a minimal tensor basis\, the identification of canonica
 l master integrals\, and the construction of a graded basis of transcenden
 tal functions tailored to specific scattering processes.\n\nSpeaker:\n* Pe
 tr Jakubcik (University of Oxford)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86159-1pm-2pm-multiloop-amplitudes
 -for-four-particle-scattering-with-one-off-shell-leg
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85914@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250723T103351
LAST-MODIFIED:20251020T111715
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251029T123000
DTEND;TZID=Europe/London:20251029T143000
SUMMARY:1pm - 2pm: The Signal to Noise problem and Stochastic Automatic Di
 fferentiation
DESCRIPTION:Lattice field theory allows for the direct computation of phys
 ical quantities in strongly coupled theories. In particular\, numerical Mo
 nte Carlo simulations using Euclidean correlation functions give direct ac
 cess to the energy spectrum of the theory.  However\, the fast degradatio
 n of the signal with the Euclidean time\, known as the signal to noise pro
 blem\, significantly affects the precision of such computations.  After i
 ntroducing the topic and expressing the Euclidean correlators as derivativ
 es with respect to sources in the action\, a potential solution to the pro
 blem will be presented.  This approach involves the concept of Automatic 
 Differentiation\, which requires\n an extension to stochastic processes\, 
 in particular for its use in Monte Carlo simulations.  Results will be sh
 own in a four-dimensional scalar theory.\n\nSpeaker:\n* Guilherme Catumba 
 (Milan Bicocca University)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85914-1pm-2pm-the-signal-to-noise-
 problem-and-stochastic-automatic-differentiation
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86104@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250905T132942
LAST-MODIFIED:20251028T111215
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251105T123000
DTEND;TZID=Europe/London:20251105T143000
SUMMARY:1pm-2pm: (A)dS Double Copy in Twistor Space
DESCRIPTION:The double copy\, which relates gravity to the square of Yang
 –Mills theory\, is usually studied in flat spacetime and is known to hol
 d both for scattering amplitudes and for classical field configurations. I
 n this talk\, I will present a new approach to extending these results to 
 maximally symmetric curved spacetimes. The new relations are formulated in
  twistor space\, a complex projective space that encodes solutions to the 
 equations of motion as holomorphic data. First\, I will discuss the case o
 f AdS₃\, where a double copy structure for bulk to boundary correlators 
 and black hole solutions naturally arises in minitwistor space. Then\, I w
 ill show how in (A)dS₄ one can construct bulk correlation functions usin
 g only twistors\, dual twistors\, and the infinity twistor as building blo
 cks. The relation to coordinate space arises via nested Penrose tranforms.
  The boundary limit of these correlators yields CFT correlators that satis
 fy the expected Ward identities and obey a simple double copy relation.\n\
 nSpeaker:\n* Mariana Carrillo Gonzalez (Imperial College)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86104-1pm-2pm-ads-double-copy-in-t
 wistor-space
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86149@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250922T214212
LAST-MODIFIED:20251110T190555
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251112T123000
DTEND;TZID=Europe/London:20251112T143000
SUMMARY:1pm-2pm: Tropical quantum field theory and asymptotics of perturba
 tion theory
DESCRIPTION:To compute predictions for phase transitions in condensed matt
 er or the collision of elementary particles\, quantum field theory is typi
 cally solved perturbatively. This expansion produces divergent series\, so
  the extraction of meaningful results is non-trivial (resummation)\; moreo
 ver very little is known about the actual asymptotic behaviour of these se
 ries.\n In this talk\, I will introduce a new limit of quantum field theor
 y (the „tropical“ limit)\, which is easily computable to very high ord
 ers in perturbation theory\, yet at the same time captures the full comple
 xity of subdivergences and renormalization. I will illustrate that the val
 ues of Feynman integrals and their tropical limit are highly correlated. B
 ased on data up to 200 loops\, we can precisely determine the asymptotic g
 rowth of the (tropical) beta function and confirm the absence of renormalo
 ns in the minimal subtraction scheme.\n\nSpeaker:\n* Erik Panzer (Oxford U
 niversity)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86149-1pm-2pm-tropical-quantum-fie
 ld-theory-and-asymptotics-of-perturbation-theory
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-85936@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250729T094604
LAST-MODIFIED:20251110T092405
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251119T123000
DTEND;TZID=Europe/London:20251119T143000
SUMMARY:1pm-2pm: Hadronic vacuum polarization to three loops in chiral per
 turbation theory
DESCRIPTION:In this talk we will report on the analytic evaluation of the 
 hadronic vacuum  polarisation   in two-flavor chiral perturbation theor
 y to three  loops [arXiv:2510.12885] that's relevant for the calculation 
 of   the anomalous magnetic moment of the muon and electron. The three-l
 oop amplitude gets contributions from polylogarithms and six elliptic mast
 er integrals\, all derivable from the single-mass two-point sunset integra
 l via differentiation or integration. Our result is intended to serve as a
  starting point for phenomenological studies\, as well as the computation 
 of finite-volume corrections in lattice QCD.\n \n Based on work in progres
 s with Laurent Lellouch\, Alessandro Lupo\, Mattias Sjö and Kálmán Szab
 o\n\nSpeaker:\n* Pierre Vanhove (IPhT Saclay)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/85936-1pm-2pm-hadronic-vacuum-pola
 rization-to-three-loops-in-chiral-perturbation-theory
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86099@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250904T163911
LAST-MODIFIED:20251124T103336
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251203T123000
DTEND;TZID=Europe/London:20251203T143000
SUMMARY:1pm-2pm: Bayesian Analysis and Analytic Continuation of Scattering
  Amplitudes from Lattice QCD
DESCRIPTION:We present a novel procedure for analyzing the lattice-QCD spe
 ctrum via the finite-volume formalism to obtain constraints on multi-hadro
 n scattering amplitudes at both real and complex energies. This approach c
 ombines a Bayesian reconstruction of the scattering amplitude on the real 
 axis with Nevanlinna interpolation for analytic continuation to complex-va
 lued energies. The method is non-parametric\, inherently accounting for pa
 rametrization dependence within the uncertainty. We demonstrate the applic
 ability of this approach using real lattice-QCD data in resonant systems f
 rom the HadSpec and BaSc collaborations.\n\nSpeaker:\n* Miguel Salg (Uni B
 ern)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86099-1pm-2pm-bayesian-analysis-an
 d-analytic-continuation-of-scattering-amplitudes-from-lattice-qcd
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86153@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250922T214446
LAST-MODIFIED:20251202T134750
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251210T103000
DTEND;TZID=Europe/London:20251210T123000
SUMMARY:11am - 12pm: Infrared singularities and the collinear limits of mu
 lti-leg scattering amplitudes
DESCRIPTION:Scattering amplitudes are expected to admit a factorised struc
 ture in special kinematic limits\, such as the Regge\, soft and collinear 
 limits. However\, less is known about the precise mechanisms through which
  factorisation of n-particle scattering amplitudes is realised at high per
 turbative orders\, where more complex structures arise. Starting with the 
 soft anomalous dimension\, in this talk I will discuss the multi-particle 
 collinear limits of massless amplitudes at three- and four-loop orders. In
  particular\, I will demonstrate how strict collinear factorisation of mul
 tiple massless final-state coloured particles is achieved\, and show that 
 the conditions on the structure of the soft anomalous dimension required b
 y two-particle collinear limits are sufficient to guarantee factorisation 
 also in any multiple collinear limit. I will also discuss new constraints 
 on the soft anomalous dimension that arise from multi-collinear limits for
  amplitudes containing massive coloured particles.\n\nSpeaker:\n* Sebastia
 n Jaskiewicz (University of Bern)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86153-11am-12pm-infrared-singulari
 ties-and-the-collinear-limits-of-multi-leg-scattering-amplitudes
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86151@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250922T214323
LAST-MODIFIED:20251212T153225
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251215T153000
DTEND;TZID=Europe/London:20251215T173000
SUMMARY:4pm - 5pm: Semiclassics for composite operators
DESCRIPTION:I will present a semiclassical framework to determine the scal
 ing dimensions of composite operators in conformal and quantum field theor
 ies. As a main example I will focus on the λϕ^4 theory and show how to 
 obtain the full spectrum of composite operators built out of n fields tr
 ansforming in the traceless-symmetric Lorentz representations to the next-
 to-leading order in the double-scaling limit  n→∞\, λ→0 with 
 λn fixed. At any given order the semiclassical expansion resums an infin
 ite number of Feynman diagrams providing a systematic path to predict hi
 gher order terms in the traditional perturbative loop expansion.\n\nSpeake
 r:\n* Oleg Antipin (Rudjer Boskovic Institute)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86151-4pm-5pm-semiclassics-for-com
 posite-operators
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86013@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20250825T160532
LAST-MODIFIED:20251217T094646
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20251217T123000
DTEND;TZID=Europe/London:20251217T143000
SUMMARY:1pm - 2pm: Conventional and exotic mesons from functional methods
DESCRIPTION:We summarise recent theoretical results on the spectrum and pr
 operties of zero\, two\, and four-quark states obtained from functional Q
 CD using Dyson-Schwinger and Bethe-Salpeter equations. We discuss the spe
 ctrum of glueballs in Yang-Mills theory and prospects to study their prope
 rties in QCD. We discuss the effects of dynamical chiral symmetry breakin
 g on the spectrum of scalar mesons and address the flavour dependence and
  the internal structure of four-quark states with open and hidden charm a
 nd bottom content.\n\nSpeaker:\n* Christian Fischer (Giessen University)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2025/86013-1pm-2pm-conventional-and-exo
 tic-mesons-from-functional-methods
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86710@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20251203T165138
LAST-MODIFIED:20260106T134140
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260114T123000
DTEND;TZID=Europe/London:20260114T143000
SUMMARY:1pm - 2pm: How strong exactly is the strong nuclear force?
DESCRIPTION:At the fundamental level the strong nuclear force is described
  by QCD\, the theory of quarks and gluons and their interactions. The stre
 ngth of their coupling\, alpha_s(m_Z)\, is one of the least precisely know
 n fundamental parameters of the Standard Model. This is due to confinement
  and the resulting impossibility to carry out experiments on free quarks a
 nd gluons. While the Standard Model should be enough to describe experimen
 ts involving the strong interactions\, phenomenological approaches often r
 ely on additional assumptions\, such as models for hadronization\,  or "q
 uark hadron duality''.  This induces systematic errors that are difficult
  to quantify  and not reducible by increased statistic. Methods based on 
 numerical simulations of lattice QCD bypass the confinement problem and ar
 e therefore best placed to determine alpha_s(m_Z) with high precision\, gi
 ven well-measured hadron masses and decay constants as experimental input.
  I will first explain the challenges for the lattice QCD approach and then
  the  strategies used by the ALPHA collaboration in our recent work. The 
 final result is  alpha_s(m_Z) = 0.11876(58)\, with a statistics-dominated
  relative error of 0.5 percent\, about half the error of the PDG average 
 of all non-lattice methods combined.\n\nSpeaker:\n* Stefan Sint (Trinity C
 ollege Dublin)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86710-1pm-2pm-how-strong-exactly-i
 s-the-strong-nuclear-force
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86696@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20251202T112436
LAST-MODIFIED:20260114T153548
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260121T123000
DTEND;TZID=Europe/London:20260121T143000
SUMMARY:1pm - 2pm: Chiral Symmetry Breaking\, Gravitational Waves and the 
 Origin of the Dark Eta Prime Mass in Confining Dark Sectors
DESCRIPTION:Dark confining sectors are phenomenologically rich. For instan
 ce a confining phase transition can be used to trigger baryogenesis\, and 
 some heavy axion models identify the dark \\eta′ particle as an axion ca
 ndidate. By modelling the dark confining phase transition with spontaneous
  symmetry breaking of chiral symmetry\, previous studies have found that a
  Gravitational Wave (GW) signal could be visible at future experiments. Th
 e mesonic potential is often modeled with a Linear Sigma Model\, including
  an explicit U(1)_A breaking term to generate the \\eta’ mass.\n\nThe \\
 eta′ meson gains its mass directly from the U(1)_A anomaly\; commonly th
 is is argued to be generated by instanton effects. However\, following ins
 tead the recent argument that results in QCD-like theories can be obtained
  from exact results in Anomaly Mediated Supersymmetry Breaking\, the \\eta
 ′ mass cannot be generated by instanton effects. Interestingly\, the mod
 ified explicit U(1)_A breaking term proposed following this argument also 
 explicitly breaks chiral symmetry. With the EFT we can only describe a sec
 ondary phase transition between non-symmetric vacua. We will discuss such 
 a phase transition in this talk\, including possible GW spectra were this 
 phase transition first-order.\n\nSpeaker:\n* Mia West (University of Flori
 da)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86696-1pm-2pm-chiral-symmetry-brea
 king-gravitational-waves-and-the-origin-of-the-dark-eta-prime-mass-in
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86784@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260106T134309
LAST-MODIFIED:20260121T104300
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260128T123000
DTEND;TZID=Europe/London:20260128T143000
SUMMARY:1pm - 2pm: Top-Yukawa- and light-quark-induced electroweakcorrecti
 ons to Higgs-Pair Production via Gluon Fusion
DESCRIPTION:Gluon fusion\, gg→HH\, is the dominant Higgs-pair production
  process at the Large HadronCollider (LHC) with direct sensitivity to the 
 trilinear Higgsself-interaction. The process is loop-induced\, with the le
 ading contribution arising from top-quark loops in the Standard Model\, an
 d QCD corrections are known to enhance the cross section significantly. Wi
 th the anticipated accuracies achievable at the high-luminosity LHC(HL-LHC
 )\, the theoretical uncertainties will be of increased relevance to compet
 e with the experimental precision at the level of less than 30%. Therefore
 \, as a first step in this direction\, we compute next-to-leading-order el
 ectroweak contributions to gg→HHfrom two sources: top-Yukawa–induced a
 nd light-quark–induced effects. I will present their impact on the total
  cross section and on the Higgs-pair invariant-mass spectrum\, highlightin
 g threshold features and the kinematic regions where electroweak effects r
 each the few-to-ten per cent level.\n\nSpeaker:\n* Arunima Bhattacharya (U
 niversity of Durham)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/86784-1pm-2pm-top-yukawa-and-light
 -quark-induced-electroweakcorrections-to-higgs-pair-production-via-gluon
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86786@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260106T134347
LAST-MODIFIED:20260127T144435
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260204T123000
DTEND;TZID=Europe/London:20260204T143000
SUMMARY:1pm - 2pm: Topological Defects as Windows into the early Universe
DESCRIPTION:Topological defects formed in the early Universe offer a uniqu
 e window into high-energy physics. In this talk\, I will focus on two such
  phenomena. First\, I will discuss cosmic strings generated during the bre
 aking of Grand Unified Theories (GUTs) to the Standard Model and show how 
 their gravitational wave signals\, when combined with proton decay searche
 s\, can constrain GUT breaking chains and high-scale baryogenesis. I will 
 then turn to domain walls arising from the spontaneous breaking of non-Abe
 lian discrete symmetries\, such as those used in lepton flavour models. Th
 eir rich vacuum structure and late-time annihilation can also produce obse
 rvable gravitational wave signatures\, providing a complementary probe of 
 flavour physics at very high energies.\n\nSpeaker:\n* Jessica Turner (Univ
 ersity of Durham)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/86786-1pm-2pm-topological-defects-
 as-windows-into-the-early-universe
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86750@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20251210T133944
LAST-MODIFIED:20260206T170957
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260212T110000
DTEND;TZID=Europe/London:20260212T123000
SUMMARY:11am - 12pm: Running EFT-hedron with null constraints at loop leve
 l
DESCRIPTION:Implications of general properties of quantum field theory\, s
 uch as causality\, unitarity\, and locality include constraints on the cou
 plings of the effective field theory (EFT) coefficients. These constraints
  follow from the connections between the infrared (IR) and ultraviolet (UV
 ) theory imposed by dispersion relations for four-particle amplitudes whic
 h formally allow one to express EFT couplings through the moments of posit
 ive-definite functions forming the EFT-hedron geometry. Previous studies o
 f these positivity bounds were mainly focused on the weakly coupled EFTs\,
  limiting the analysis to tree-level amplitudes of the IR theory. In this 
 work\, I will show how to extend the scope of positivity bounds including 
 one-loop amplitudes\, which is essential especially for the loops of massl
 ess particles. The results demonstrate that while for small coupling const
 ants\, the one-loop bounds are in good agreement with the tree-level resul
 ts\, the allowed EFT parameter ranges can be significantly modified if a w
 eak coupling assumption is not additionally imposed. I will discuss the di
 fficulties of obtaining the constraints in forward limit in four dimension
 s related to the infrared singularities and show how to overcome these pro
 blems by constructing finite combinations of null constraints.\n\nSpeaker:
 \n* Long-Qi Shao (University of Pisa)
LOCATION:Room 6201\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86750-11am-12pm-running-eft-hedron
 -with-null-constraints-at-loop-level
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86698@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20251202T112536
LAST-MODIFIED:20260217T112148
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260218T123000
DTEND;TZID=Europe/London:20260218T143000
SUMMARY:1pm - 2pm: New algorithms for Feynman integral reduction and $\\va
 repsilon$-factorised differential equations
DESCRIPTION:Precision calculations in quantum field theory rely very often
  on perturbation theory and thus on the computation of Feynman integrals. 
 Two of the basic algorithms are integration-by-parts and the method of dif
 ferential equations. In this talk I show how the efficiency of these algor
 ithms can be improved by taking geometric information of the Feynman integ
 rals into account. The method does not require any prior knowledge of the 
 geometry and merely amounts to counting poles and residues.\n\nSpeaker:\n*
  Stefan Weinzierl (Uni Mainz)
LOCATION:Room 4325B\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86698-1pm-2pm-new-algorithms-for-f
 eynman-integral-reduction-and-varepsilon-factorised-differential
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86748@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20251210T133627
LAST-MODIFIED:20251210T133627
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260225T123000
DTEND;TZID=Europe/London:20260225T143000
SUMMARY:1pm - 2pm: Entanglement and pair production in intense electromagn
 etic fields
DESCRIPTION:We investigate the spin correlations between electron-positron
  pairs created from a photon when it scatters in a high-intensity laser pu
 lse via the nonlinear Breit-Wheeler process. We find that the spin states 
 of the generated electron-positron pair can exhibit strong entanglement\, 
 with the degree being sensitive to the photon energy\, laser intensity\, a
 nd the relative polarisation of the photon and laser pulse. Photons with a
  high degree of polarisation can create strongly entangled pairs even in t
 he intermediate intensity (non-perturbative) regime. We find that if the p
 hotons are provided by a Compton source\, strongly spin-entangled electron
 -positron pairs can be generated with technology available today.\n\nSpeak
 er:\n* Ben King (Plymouth University)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86748-1pm-2pm-entanglement-and-pai
 r-production-in-intense-electromagnetic-fields
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86860@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260114T174304
LAST-MODIFIED:20260225T095639
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260304T123000
DTEND;TZID=Europe/London:20260304T143000
SUMMARY:1pm - 2pm: Toward pion-pion scattering from lattice QCD with stagg
 ered quarks
DESCRIPTION:Scattering processes featuring the strong interactions can be 
 studied using lattice QCD by means of the Lüscher formalism. This approac
 h relies on analyticity and unitarity of the S-matrix to relate finite-vol
 ume energy levels to infinite-volume scattering amplitudes. One of the mos
 t common fermion actions in lattice QCD studies is based on staggered ferm
 ions\, due to their high computational efficiency. However\, simulations e
 mploying staggered fermions manifest unitarity-violating effects. Moreover
 \, the meson sector of this theory contains multiple pions as a result of 
 the so-called taste-splitting effects. Both of these discretization artifa
 cts scale with the square power of the lattice spacing and thus disappear 
 in the continuum. Nevertheless\, at non-zero lattice spacing\, unitarity v
 iolation and taste splitting hinder the applicability of the Lüscher form
 alism to observables computed using staggered fermions. In this talk\, we 
 will discuss two approaches to deal with the challenges of extracting scat
 tering amplitudes from staggered lattice QCD: (1) extrapolating the energy
  levels\, at a fixed volume\, to the continuum\, where the standard versio
 n of the Lüscher formalism works\, and (2) generalizing the formalism to 
 incorporate staggered lattice artifacts. In both cases\, we use the effect
 ive theory describing low-energy QCD with staggered fermions\, i.e.\, Root
 ed Staggered Chiral Perturbation Theory. Specifically\, we focus on the s
 impler case of pion-pion scattering in the isospin-2 channel\, and discuss
  prospects for other isospin channels. \n\nSpeaker:\n* Dean Valois (Unive
 rsity of Granada)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/86860-1pm-2pm-toward-pion-pion-sca
 ttering-from-lattice-qcd-with-staggered-quarks
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86966@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260206T171100
LAST-MODIFIED:20260305T163847
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260311T123000
DTEND;TZID=Europe/London:20260311T143000
SUMMARY:1pm - 2pm: Spatial correlations in QCD at high temperature
DESCRIPTION:Quantum Chromodynamics (QCD) is the fundamental theory which d
 escribes exotic systems like the quark matter created in relativistic heav
 y-ion collisions or shortly after the Big Bang. Even though the coupling s
 trength decreases with the temperature due to asymptotic freedom\, the int
 eractions are not necessarily weak in the regime where chiral symmetry is 
 restored. Either effective field theory or numerical lattice QCD is then r
 equired to understand the interactions of quarks and gluons in such a phas
 e. Spatial correlations are an interesting class of observables which can 
 be used to test effective theories and even provide constraints on dynamic
 al processes. I will outline some progress and some challenges in computin
 g such correlation functions in the framework of lattice simulations.\n\n
 Speaker:\n* Tim Harris (ETH Zurich)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/86966-1pm-2pm-spatial-correlations
 -in-qcd-at-high-temperature
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86862@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260114T174408
LAST-MODIFIED:20260313T143032
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260318T123000
DTEND;TZID=Europe/London:20260318T143000
SUMMARY:1pm - 2pm: Quantum Simulation with Finite Groups
DESCRIPTION:A possibility to overcome certain difficulties with numerical 
 simulations of quantum field theories is to use quantum computers rather t
 han classical ones. This poses several theoretical challenges\, as it requ
 ires working in a Hamiltonian picture with a finite-dimensional Hilbert sp
 ace. For gauge theories\, one possibility is to replace the gauge group wi
 th one of its finite subgroups. After reviewing the problem and its possib
 le solutions\, we will discuss the ongoing search for a formulation which 
 would allow one to recover continuum gauge theories from locally finite-di
 mensional models.\n\nSpeaker:\n* Alessandrio Mariani (University of Turin)
LOCATION:Higgs Centre (Room 4305)\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86862-1pm-2pm-quantum-simulation-w
 ith-finite-groups
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87124@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260305T164038
LAST-MODIFIED:20260305T164038
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260325T123000
DTEND;TZID=Europe/London:20260325T143000
SUMMARY:1pm - 2pm: Entropic order
DESCRIPTION:It is commonly expected that increasing temperature drives phy
 sical systems towards disorder. Surprisingly\, certain models are conjectu
 red to exhibit the opposite behaviour: at extremely high temperatures they
  enter an ordered phase\, stabilized by entropy. After a gentle introducti
 on to this counterintuitive phenomenon\, I will outline the main ideas beh
 ind a rigorous proof showing that such entropically driven order can indee
 d occur. No prior familiarity with the topic will be assumed.\n\nSpeaker:\
 n* Enrico Andriolo (Durham University)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/87124-1pm-2pm-entropic-order
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86968@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260206T171447
LAST-MODIFIED:20260330T132430
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260401T123000
DTEND;TZID=Europe/London:20260401T143000
SUMMARY:1pm - 2pm: Gravitational Waveforms from Field Theory
DESCRIPTION:In recent years\, we have witnessed how newly introduced field
 -theoretic tools have rapidly pushed the state-of-the-art of precision com
 putations in the context of gravitational physics. In this talk\, I will r
 eview recent progress on the extraction of the gravitational waveforms fro
 m (quantum) field theory\, the cutting-edge results\, and the comparison w
 ith other methods\, as well as a new understanding of the structure of asy
 mptotic infinity.\n\nSpeaker:\n* Stefano de Angelis (IPhT Saclay)
LOCATION:Room 4325B\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86968-1pm-2pm-gravitational-wavefo
 rms-from-field-theory
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86970@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260206T171646
LAST-MODIFIED:20260402T103243
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260408T123000
DTEND;TZID=Europe/London:20260408T143000
SUMMARY:1pm - 2pm: Hadronic resonances from Lattice QCD
DESCRIPTION:The majority of known hadrons in the low-energy QCD spectrum a
 re resonances observed in multi-particle scattering processes. First-princ
 iples determinations of the properties of these unstable hadrons are a cen
 tral goal of lattice QCD. Significant progress has been made in the develo
 pment\, implementation\, and application of theoretical tools that connect
  finite-volume lattice QCD quantities to scattering amplitudes\, enabling 
 the determination of the masses and widths of a variety of hadronic resona
 nces. In this talk\, I will discuss recent advances in lattice QCD studies
  of meson-baryon resonances\, including the $\\Lambda(1405)$\, baryon-bary
 on systems such as the deuteron\, and exotic three-hadron states such as t
 he doubly charmed tetraquark.\n\nSpeaker:\n* Fernando Romero-Lopez (Uni Be
 rn)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/86970-1pm-2pm-hadronic-resonances-
 from-lattice-qcd
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87126@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260305T164245
LAST-MODIFIED:20260416T110631
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260415T123000
DTEND;TZID=Europe/London:20260415T143000
SUMMARY:1pm - 2pm: The magic of scattering amplitudes
DESCRIPTION:In recent years\, a growing community of researchers have been
  applying ideas from Quantum Information / Computing theory to high energy
  physics. Entanglement is one such quantity\, but there are by now many ot
 hers. This talk will examine the property of “magic” (also known as 
 “non-stabliserness”) which\, roughly speaking\, measures whether quant
 um systems have a genuine computational advantage over their classical cou
 nterparts. I will review the origin of this concept\, before describing re
 cent applications from both collider physics and scattering amplitudes res
 earch. No prior knowledge of quantum computing will be assumed. \n\nSpeak
 er:\n* Chris White (Queen Mary University of London)
LOCATION:Room 4325B\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/87126-1pm-2pm-the-magic-of-scatter
 ing-amplitudes
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86972@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260206T171803
LAST-MODIFIED:20260420T140521
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260422T123000
DTEND;TZID=Europe/London:20260422T143000
SUMMARY:1pm - 2pm: Cosmological Correlators: Unitarity and Renormalization
DESCRIPTION:Cosmological observables of the primordial universe are encode
 d in the late-time field-theoretic wavefunction. I begin with a pedagogica
 l review of the constraints on the wavefunction imposed by fundamental pri
 nciples such as unitarity\, locality\, and causality. I then show that for
  shift-symmetric scalars in de Sitter—an excellent approximation for man
 y inflationary models—the wavefunction is purely real at tree level. Thi
 s property is violated by a quantum anomaly that arises from ultraviolet d
 ivergences and the subsequent process of renormalization.\n\nI discuss the
  main renormalization procedures employed in cosmology\, namely dimensiona
 l regularization\, mass-and-dimension regularization\, and the recently in
 troduced eta-regulators\, emphasizing the crucial differences with flat-sp
 acetime quantum field theory. I then show that\, to all loop orders in per
 turbation theory\, the imaginary part of the renormalized wavefunction is 
 fixed by its dependence on the renormalization scale. This result follows 
 from unitarity\, locality\, dilation symmetry\, and the assumption of a Bu
 nch–Davies vacuum. The compact relation I present for the wavefunction i
 mplies an infinite set of constraints among correlators of massless fields
  and their conjugate momenta\, which I illustrate explicitly at one-loop o
 rder.\n\nSpeaker:\n* Enrico Pajer (University of Cambridge)
LOCATION:Room 4325B\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86972-1pm-2pm-cosmological-correla
 tors-unitarity-and-renormalization
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87030@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260218T082728
LAST-MODIFIED:20260420T204320
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260427T123000
DTEND;TZID=Europe/London:20260427T143000
SUMMARY:1pm - 2pm: Meson spectrum in large-N QCD from Eguchi-Kawai reducti
 on
DESCRIPTION:When the number of colors N tends to infinity\, hadron observa
 bles of Quantum Chromo-Dynamics (QCD) are amenable to be expanded in serie
 s of 1/N. The large-N 1/N expansion of QCD is a theoretical tool with fund
 amental phenomenological implications. Unlike the usual perturbative expan
 sion in the strong coupling\, the 1/N expansion is fully non-perturbative.
  On general grounds\, one needs lattice simulations to compute it from fir
 st principles. I will present a novel non-perturbative lattice determinati
 on of the meson spectrum of QCD in the large-N limit exploiting Eguchi-Kaw
 ai reduction. This is a general property of large-N gauge theories allowi
 ng the study of large-N dynamics in a volume-reduced one-point box.\n\nSpe
 aker:\n* Claudio Bonanno (Uni Bern)
LOCATION:Higgs Centre Seminar Room\, Room 4305\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/87030-1pm-2pm-meson-spectrum-in-la
 rge-n-qcd-from-eguchi-kawai-reduction
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86974@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260206T172011
LAST-MODIFIED:20260427T091508
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260429T123000
DTEND;TZID=Europe/London:20260429T143000
SUMMARY:1pm - 2pm: ESME stays positive: event generation with positive wei
 ghts
DESCRIPTION:The presence of negative event weights in beyond-leading-order
  event generators significantly reduce the statistical efficiency of Monte
  Carlo simulations and complicate their use in experimental analyses\, and
  so are best to be avoided. ESME is a new positive-definite matching schem
 e for NLO event generation. The method has recently been implemented in th
 e PanScales framework\, demonstrating fast NLO+NLL event generation for a 
 selection of colour-singlet processes. In this talk\, we present the key t
 heoretical and algorithmic principles underlying the construction of ESME\
 , highlighting features that are broadly applicable to other Monte Carlo e
 vent generators. We then describe its concrete implementation within PanSc
 ales\, focusing on its interplay with NLL-accurate parton showers and the 
 mechanisms by which full NLO+NLL accuracy is achieved. \n\nSpeaker:\n* Me
 lissa van Beekveld (Nikhef)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/86974-1pm-2pm-esme-stays-positive-
 event-generation-with-positive-weights
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-86976@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260206T172114
LAST-MODIFIED:20260429T104628
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260506T123000
DTEND;TZID=Europe/London:20260506T143000
SUMMARY:1pm - 2pm: Gauge theory bound states
DESCRIPTION:Bound states have a reputation of being a difficult and murky 
 aspect of Quantum Field Theory. The Feynman diagram expansion around free 
 fields is unsuitable for bound states. QFT textbooks focus on scattering a
 mplitudes. There are few studies of the Poincare covariance of bound state
 s.\n\nI discuss a perturbative method based on canonical quantization in t
 emporal (A^0=0) gauge. Gauge fixing requires states to have a longitudinal
  A_L gauge field\, whose energy density gives an instantaneous potential. 
 The confinement scale Lambda_QCD is introduced via a boundary condition on
  Gauss' law for A_L. The results for confinement and chiral symmetry break
 ing in QCD are promising.\n\nSpeaker:\n* Paul Hoyer (University of Helsink
 i)
LOCATION:Higgs Centre (Room 4305)\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/86976-1pm-2pm-gauge-theory-bound-s
 tates
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87657@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260810T140510
LAST-MODIFIED:20260810T140510
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260901T123000
DTEND;TZID=Europe/London:20260901T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Anna Hasenfratz (University of Colorado)
LOCATION:Higgs Centre (Room 4305)
URL:https://www.ph.ed.ac.uk/events/2026/87657-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87656@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260810T085508
LAST-MODIFIED:20260810T085508
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260902T123000
DTEND;TZID=Europe/London:20260902T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Stefan Schacht (University of Durham)
LOCATION:Room 4325B\, JCMB
URL:https://www.ph.ed.ac.uk/events/2026/87656-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87501@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T080515
LAST-MODIFIED:20260709T080906
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260916T123000
DTEND;TZID=Europe/London:20260916T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Anton Olsson (Durham (IPPP))
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87501-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87492@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260630T160214
LAST-MODIFIED:20260630T160214
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260923T123000
DTEND;TZID=Europe/London:20260923T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Andreas Juttner (CERN & Southampton Univers
 ity)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87492-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87503@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081041
LAST-MODIFIED:20260709T081041
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20260930T123000
DTEND;TZID=Europe/London:20260930T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Coenraad Marinissen (Nikhef )
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87503-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87494@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260630T214053
LAST-MODIFIED:20260630T214143
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261007T123000
DTEND;TZID=Europe/London:20261007T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Alberto Ramos (Valencia University\, IFIC)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87494-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87504@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081216
LAST-MODIFIED:20260709T081216
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261014T123000
DTEND;TZID=Europe/London:20261014T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87504-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87493@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260630T160619
LAST-MODIFIED:20260630T214217
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261021T123000
DTEND;TZID=Europe/London:20261021T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Dr Gustav Mogull (Queen Mary University of 
 London)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87493-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87505@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081408
LAST-MODIFIED:20260709T081408
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261028T123000
DTEND;TZID=Europe/London:20261028T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87505-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87506@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081456
LAST-MODIFIED:20260709T081456
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261104T123000
DTEND;TZID=Europe/London:20261104T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87506-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87508@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081634
LAST-MODIFIED:20260709T081634
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261111T123000
DTEND;TZID=Europe/London:20261111T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Cedric Lorcé (Ecole polytechnique)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87508-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87510@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081813
LAST-MODIFIED:20260709T081813
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261118T123000
DTEND;TZID=Europe/London:20261118T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA\n\nSpeaker:\n* Brando Bellazzini (IPhT\, Saclay)
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87510-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87511@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081902
LAST-MODIFIED:20260709T081902
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261125T123000
DTEND;TZID=Europe/London:20261125T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87511-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87512@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T081941
LAST-MODIFIED:20260709T081941
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261202T123000
DTEND;TZID=Europe/London:20261202T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87512-1pm-2pm-tba
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
UID:EVENT-87513@www.ph.ed.ac.uk
DTSTAMP:20260817T173438
CREATED:20260709T082018
LAST-MODIFIED:20260709T082018
STATUS:CONFIRMED
DTSTART;TZID=Europe/London:20261209T123000
DTEND;TZID=Europe/London:20261209T143000
SUMMARY:1pm - 2pm: TBA
DESCRIPTION:TBA
LOCATION:Higgs Centre Seminar Room (4305\, JCMB)
URL:https://www.ph.ed.ac.uk/events/2026/87513-1pm-2pm-tba
END:VEVENT
END:VCALENDAR