Consistent perturbative fixed point calculations in gauge theories

Particle Physics Theory seminar

Consistent perturbative fixed point calculations in gauge theories

  • Event time: 2:00pm
  • Event date: 3rd October 2018
  • Speaker: Professor Thomas Ryttov (CP3 Origins, Odense)
  • Location: Higgs Centre Seminar Room, Room 4305,

Event details

In order to obtain a better understanding of non-supersymmetric as well as supersymmetric gauge theories in the non-Abelian Coulomb phase it is important that we can reliably calculate scaling dimensions of composite operators. We show how to consistently calculate scaling dimensions order by order in perturbation theory in a fully scheme independent and unambiguous manner. In supersymmetric gauge theories we find that the scaling dimension of all gauge invariant chiral operators as well as central charges a, b and c are astonishingly well approximated by a few loops computation throughout the entire conformal window. We also study how electric magnetic duality emerges order by order within the conformal window. Finally we study scaling dimensions in non-supersymmetric gauge theories (including QCD) to the maximum known order and provide evidence that a similar precision is achieved here.

Event resources

About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..

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