International Journal of Modern Physics B

SIX-VERTEX MODELS AS FERMI GASES

Peter Orland A. B. C

Published Aug 20, 1991• 1 citation

Abstract

The two-dimensional six-vertex model with a particular choice of external field is known to be equivalent to a theory of free Fermions. Two conditions are made on the six-vertex weights. A simple physical interpretation of the ordered and disordered phases is found. The Fermi sea is filled and the free energy, correlation length, order parameter, correlation functions and phase diagram are determined.

DOI: 10.1142/s0217979291000936

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