Tricritical curve of massive chiral Gross-Neveu model with isospin

  title={Tricritical curve of massive chiral Gross-Neveu model with isospin},
  author={Michael Thies},
  journal={Physical Review D},
  • M. Thies
  • Published 29 July 2022
  • Physics
  • Physical Review D
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… 
1 Citations

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