# Exploring large charge density systems with lattice QCD+QED

#### Exploring large charge density systems with lattice QCD+QED

- Event time: 2:00pm
- Event date: 5th May 2021
- Speaker: Dr Michael Wagman (Fermilab)
- Location: Online - see below

### Event details

Both the complexity of meson, nucleon, and nuclear systems that can be studied using lattice QCD and the precision that can be achieved are steadily increasing. QED effects are being included in lattice calculations of fundamental properties of the Standard Model such as meson and baryon masses and contributions to g-2 of the muon targeting percent-level or better precision. In systems of multiple charged particles, QED effects are challenging to include but can also become large and lead to nonperturbative effects such as atomic binding. In this talk, I will present lattice QCD+QED results for systems of up to 12 charged and neutral mesons that explore the role of QED effects in multi-particle systems. I will also present the construction of a non-relativistic effective field theory of charged particles in a finite volume that can be used to constrain two- and three-meson interactions using these and future lattice QCD+QED results. Finally, I will discuss general lessons from these exploratory calculations on the importance of nonperturbative Coulomb effects for future multi-particle lattice QCD+QED calculations.

Meeting link:

Join Zoom Meeting

https://ed-ac-uk.zoom.us/j/88455585610

Meeting ID: 884 5558 5610

Passcode: Bgni6GHH

Join by Skype for Business

https://ed-ac-uk.zoom.us/skype/88455585610

#### 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..