The Phase Diagram of the $U(2)\times U(2)$ Sigma Model
High Energy Physics - Lattice
2009-10-30 v1
Abstract
We study the phase diagram of the scalar model in dimensions. We find that the phase transition is of first order in most of the parameter space. The theory can still be relevant to continuum physics (as an effective theory) provided the transition is sufficiently weakly first order. This places restrictions on the allowed coupling constants.
Keywords
Cite
@article{arxiv.hep-lat/9709060,
title = {The Phase Diagram of the $U(2)\times U(2)$ Sigma Model},
author = {D. Espriu and V. Koulovassilopoulos and A. Travesset},
journal= {arXiv preprint arXiv:hep-lat/9709060},
year = {2009}
}
Comments
3 pages (Latex), 2 eps figures, uses espcrc2.sty, epsf, talk given at LATTICE97