Phase Transitions in Models with Discrete Symmetry

Abstract

We investigate a class of models with a massless fermion and a self-interacting scalar field with the Yukawa interaction between these two fields. The models considered are formulated in two and four spacetime dimensions and possess a discrete symmetry. We calculate the chiral condensates are calculated in the one-loop approximation. We show that the models have a phase transitions as a function of the coupling constants.

10 pages, 1 figure

References in corpus (1)

• Chiral density waves in the NJL${}_2$ model with quark number and isospin chemical potentials