%0 Journal Article
%T Phase Diagram of the Three Dimensional Four Fermi Model with Finite N Corrections
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%+ Departamento Física [Florianópolis]
%A Kneur, Jean-Loïc
%A Pinto, Marcus
%A Ramos, Rudnei O.
%A Staudt, Ederson
%< avec comité de lecture
%Z 07-089
%@ 0218-3013
%J International Journal of Modern Physics E
%I World Scientific Publishing
%V 16
%N 9
%P 2802 - 2805
%8 2007-06-28
%D 2007
%R 10.1142/S0218301307008446
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Journal articles
%X We study the phase diagram of the 3d massless Gross–Neveu model with different numbers of fermionic species, N. Using the Optimized Perturbation Theory technique, the free energy is evaluated at finite temperature and chemical potential. The analytical results allow us to calculate critical quantities for any value of N and, in the present work, we choose de values N = 1,3,4,10. In addition, we determine the evolution of the tricritical points, in the temperature versus chemical potential plane for these different values of N.
%G English
%L hal-00394236
%U https://hal.science/hal-00394236
%~ IN2P3
%~ LPTA
%~ CNRS
%~ UNIV-MONTP2
%~ UNIV-MONTPELLIER
%~ UM1-UM2