Manifestations of Confinement/Deconfinement in 4D compact QED on the lattice.

26 Jul 2021, 13:45
15m
Oral presentation Vacuum Structure, Confinement, and Chiral Symmetry Vacuum Structure, Confinement, and Chiral Symmetry

Speaker

Lee Loveridge (LACCD)

Description

It has long been known that there is a phase transition between confined and unconfined phases of compact pure gauge QED on the lattice. In this work we report three manifestations of this phase change as seen in the Landau gauge photon propagator, the static potential, and distribution of Dirac Strings in the gauge fixed configurations. Each of these was calculated with large lattices with volumes: $32^4$, $48^4$ and $96^4$. We will show that the confined phase manifests with a Yukawa type propagator with a dynamically generated mass gap, a linearly increasing potential, and a significant concentration of Dirac strings while the unconfined phase appears consistent with the continuum results, a free propagator, a near constant long-distance potential, and a small concentration of Dirac strings trending towards 0. Furthermore, the photon propagator is investigated near the transition between the two phases.

Primary authors

Lee Loveridge (LACCD) Paulo Silva (University of Coimbra) Prof. Orlando Oliveira (University of Coimbra)

Presentation materials