Lee-Yang edge singularity in the three-dimensional Gross-Neveu model at finite temperature

Abstract

We discuss the relevance of the Lee-Yang edge singularity to the finite-temperature Z_2-symmetry restoration transition of the Gross-Neveu model in three dimensions. We present an explicit result for its large-N free energy density in terms of Zeta(3) and the absolute maximum of Clausen's function.

Comments: 8 pages, LaTex