Instantons and the ground state of the massive Schwinger model

Journal Article · Fri Oct 15 00:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.3891· OSTI ID:6042273

Paranjape, M B ^[1]; Ross, R ^[2]

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1. Institut fuer Theoretische Physik, Universitaet Innsbruck, Technikerstrasse 25, Innsbruck A-6020 (Austria)
2. Laboratoire de Physique Nucleaire, Departement de Physique, Universite de Montreal, C.P. 6128 succ. A,'' Montreal, Quebec, H3C3J7 (Canada)

We study the massive Schwinger model, quantum electrodynamics of massive, 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 potential for the dynamical degree of freedom in the gauge field. We calculate the nonperturbative contributions to the ground state energy.

• OSTI ID: 6042273
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 48:8; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM ELECTRODYNAMICS
TWO-DIMENSIONAL CALCULATIONS
GROUND STATES
INSTANTONS
ENERGY
FERMIONS
TUNNEL EFFECT
UNIFIED GAUGE MODELS
ELECTRODYNAMICS
ENERGY LEVELS
FIELD THEORIES
MATHEMATICAL MODELS
PARTICLE MODELS
QUANTUM FIELD THEORY
QUASI PARTICLES
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)
662220 - Quantum Electrodynamics- (1992-)