%0 Journal Article
%T Phase diagram of the 4D U(1) model at finite temperature
%A Claudio Bonati
%A Massimo D'Elia
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevD.88.065025
%X We explore the phase diagram of the 4D compact U(1) gauge theory at finite temperature as a function of the gauge coupling and of the compactified Euclidean time dimension L_t. We show that the strong-to-weak coupling transition, which is first order at T=0 (L_t=\infty), becomes second order for high temperatures, i.e. for small values of L_t, with a tricritical temporal size \bar{L_t} located between 5 and 6. The critical behavior around the tricritical point explains and reconciles previous contradictory evidences found in the literature.
%U http://arxiv.org/abs/1305.3564v2