Strong Coupling Lattice Schwinger Model on Large Spherelike Lattices

Details Strong Coupling Lattice Schwinger Model on Large Spherelike Lattices Strong Coupling Lattice Schwinger Model on Large Spherelike Lattices

1995-06-27

arxiv.org/abs/hep-lat/9506028v1

Nucl.Phys. B455 (1995) 785-795

Physics

High Energy Physics

High Energy Physics - Lattice

16 pages + 7 figures, gzipped POSTSCRIPT file

Scientific paper

10.1016/0550-3213(95)00533-X

The lattice regularized Schwinger model for one fermion flavor and in the strong coupling limit is studied through its equivalent representation as a restricted 8-vertex model. The Monte Carlo simulation on lattices with torus-topology is handicapped by a severe non-ergodicity of the updating algorithm; introducing lattices with spherelike topology avoids this problem. We present a large scale study leading to the identification of a critical point with critical exponent $\nu=1$, in the universality class of the Ising model or, equivalently, the lattice model of free fermions.

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