Phase Transitions in NJL and super-NJL models
High Energy Physics - Theory
2007-05-23 v1 High Energy Physics - Phenomenology
Abstract
An elementary method of determination of the character of the hot phase transition in 4d four-fermion NJL-type models is applied to non-supersymmetric and supersymmetric versions of simple NJL model. We find that in the non-susy case the transition is usually of the second order. It is weakly first order only in the region of parameters which correspond to fermion masses comparable to the cut-off. In the supersymmetric case both kinds of phase transitions are possible. For sufficiently strong coupling and sufficiently large susy-breaking scale the transition is always of the first order.
Keywords
Cite
@article{arxiv.hep-th/9307162,
title = {Phase Transitions in NJL and super-NJL models},
author = {Z. Lalak and J. Pawelczyk and S. Pokorski},
journal= {arXiv preprint arXiv:hep-th/9307162},
year = {2007}
}
Comments
LATEX, 1 figure available upon request, 11 pages, TUM-TH-157/93, MPI-Ph/93-42, UW-IFT-10/93