The 2d Gross-Neveu Model at Finite Temperature and Density with Finite Corrections
Abstract
We use the linear δ expansion, or optimized perturbation theory, to evaluate the effective potential for the two dimensional Gross-Neveu model at finite temperature and density obtaining analytical equations for the critical temperature, chemical potential and fermionic mass which include finite N corrections. Our results seem to improve over the traditional large-N predictions.
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