Real Time Dynamics and Confinement in the Z(n) Schwinger-Weyl lattice model for 1+1 QED

Year: 2020

Authors: Magnifico G., Dalmonte M., Facchi P., Pascazio S., Pepe FV., Frcolessi E.

Autors Affiliation: Univ Bologna, Dipartirnento Fis & Astron, I-40127 Bologna, Italy; INFN, Sez Bologna, I-40127 Bologna, Italy; Abdus Salarn ICTP, Str Costiera 11, I-34151 Trieste, Italy; SISSA, Via Bonornea 265, I-34136 Trieste, Italy; Univ Bari, Dipartimento Fis, I-70126 Bari, Italy; Univ Bari, MECENAS, I-70126 Bari, Italy; INFN, Sez Bari, I-70126 Bari, Italy; CNR, Ist Nazl Ott INO, I-50125 Florence, Italy.

Abstract: We study the out-of-equilibrium properties of 1 + 1 dimensional quantum electrodynamics (QED), discretized via the staggered-fermion Schwinger model with an Abelian Z(n) gauge group. We look at two relevant phenomena: first, we analyze the stability of the Dirac vacuum with respect to particle/antiparticle pair production, both spontaneous and induced by an external electric field; then, we examine the string breaking mechanism. We observe a strong effect of confinement, which acts by suppressing both spontaneous pair production and string breaking into quark/antiquark pairs, indicating that the system dynamics displays a number of out-of-equilibrium features.

Journal/Review: QUANTUM

Volume: 4      Pages from: 281-1  to: 281-21

KeyWords: QUANTUM SIMULATIONS; GAUGE-INVARIANCE; FERMIONS; PHYSICS; STATES
DOI: 10.22331/q-2020-06-15-281

Citations: 97
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