On the finite temperature $\lambda {\phi }^4$ and Gross-Neveu models. Is there a first order phase transition in $(\lambda {\phi }^4{)}_{D=3}$?

A. P. C. Malbouisson, N. F. Svaiter

We study the behavior of two diferent models at finite temperature in a $D$-dimensional spacetime. The first one is the $\lambda {\phi }^4$ model and the second one is the Gross-Neveu model.…