Mass shift in lattice Hamiltonian approach to Schwinger model

07.06.2023 14:30 – 15:30

The Schwinger model, or quantum electrodynamics in 1+1 dimensions, is one of the simplest gauge theories. In this talk, I will first review a standard lattice discretization of the Schwinger model using the Kogut-Susskind Hamiltonian approach with staggered fermions. I will then present a new relation between the lattice and continuum mass parameters, and show how this relation significantly improves the continuum extrapolations of various quantities computed on the lattice. Lastly, I will show how this approach sheds light onto the phase diagram of the two-flavor Schwinger model at zero temperature.

Lieu

Bâtiment: Ecole de Physique

Auditoire Stückelberg

entrée libre