SU(2) Flavor Schwinger Model on the Lattice
May, 197729 pages
Published in:
- Phys.Rev.D 16 (1977) 1782
Report number:
- HUTP-77/A026
Citations per year
Abstract: (APS)
Hamiltonian lattice perturbation methods are used to study the (1 + 1)-dimensional, SU(2)-flavor Abelian gauge model. For a model with coupling constant g and fermion mass m, two distinct vacuum regions characterized by the magnitude of mg are found. Expansions about the Ising-type vacuum corresponding to large mg are carried out to order 1g8a8 (a=latticespacing) and improved using Padé approximants. The results compare favorably qualitatively and quantitatively with recent studies of the weak-coupling limit of the continuum theory. Expansions to order 1g4a4 about the Heisenberg antiferromagnetlike vacuum corresponding to small mg agree qualitatively with known results for the strong-coupling limit of the continuum theory.- SYMMETRY: SU(2)
- QUARK: FLAVOR
- FIELD THEORETICAL MODEL: SCHWINGER
- APPROXIMATION: LATTICE
- GAUGE FIELD THEORY: VACUUM STATE
- PERTURBATION THEORY
- COUPLING CONSTANT
- FERMION: MASS
- MASS: FERMION
- STATISTICAL MECHANICS: ISING
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