Theta Vacua in the Light-Cone Schwinger Model

Abstract

We discuss the bosonized Schwinger model in light-cone quantization, using discretization as an infrared regulator. We consider both the light-cone Coulomb gauge, in which all gauge freedom can be removed and a physical Hilbert space employed, and the light-cone Weyl (temporal) gauge, in which the Hilbert space is unphysical and a Gauss law operator is used to select a physical subspace. We describe the different ways in which the theta vacuum is manifested depending on this choice of gauge, and compute the theta-dependence of the chiral condensate in each case.

RevTeX, 5 pages

References in corpus (5)

• Spontaneous Symmetry Breaking of phi4(1+1) in Light Front Field Theory
• Spontaneous symmetry breaking of (1+1)-dimensional ${\varphi }^4$ theory in light-front field theory (II)
• Spontaneous symmetry breaking of (1+1)-dimensional ${\varphi }^4$ theory in light-front field theory (III)
• Schwinger Model in the Light-Cone Representation
• Broken phase of the O(N) ϕ^4 model in light cone quantization and 1/N expansion

Cited by in corpus (12)

• Quantum Chromodynamics and Other Field Theories on the Light Cone
• Computing Light-Front Wave Functions Without Light-Front Quantization: A Large-Momentum Effective Theory Approach
• Vacuum Structure of Two-Dimensional Gauge Theories on the Light Front
• Bosonized Massive N-flavor Schwinger Model
• Nonperturbative renormalization and the electron's anomalous moment in large-alpha QED
• Variational Mass Perturbation Theory for Light-Front Bound-State Equations
• Theta-Vacuum of the Bosonized Massive Light-Front Schwinger Model
• Large Gauge Transformations and the Light-Front Vacuum Structure
• Dynamics of the Light-Cone Zero Modes: Theta Vacuum of the Massive Schwinger Model
• Zero-mode contribution to the light-front Hamiltonian of Yukawa type models
• Classical Aspects of the Abelian Higgs Model on the Light Front
• Infrared divergence on the light-front and dynamical Higgs mechanism