2000 character limit reached
Tricritical curve of massive chiral Gross-Neveu model with isospin (2207.14503v1)
Published 29 Jul 2022 in hep-th
Abstract: We reconsider the two-flavor version of the massive, chiral Gross-Neveu model in 1+1 dimensions. Its phase diagram as a function of baryon chemical potential, isospin chemical potential and temperature has previously been explored. We recapitulate the results, adding the missing tricritical curves. They can be determined exactly by extending the standard stability analysis, using fourth order almost degenerate perturbation theory. Results for three different bare masses are presented and discussed.