INSTANTONS AND THE GROUND-STATE OF THE MASSIVE SCHWINGER MODEL

Authors
PARANJAPE MB ROSS R
Citation
Mb. Paranjape et R. Ross, INSTANTONS AND THE GROUND-STATE OF THE MASSIVE SCHWINGER MODEL, Physical review. D. Particles and fields, 48(8), 1993, pp. 3891-3900
Citations number
22
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
48
Issue
8
Year of publication
1993
Pages
3891 - 3900
Database
ISI
SICI code
0556-2821(1993)48:8<3891:IATGOT>2.0.ZU;2-1
Abstract
We study the massive Schwinger model, quantum electrodynamics of massi ve, Dirac fermions, in 1 + 1 dimensions, with space compactified to a circle. In the limit that transitions to fermion-antifermion pairs can be neglected, we study the full ground state. We focus on the effect of instantons which mediate tunneling transitions in the induced poten tial for the dynamical degree of freedom in the gauge field. We calcul ate the nonperturbative contributions to the ground state energy.