A calculation of the QCD phase diagram at finite temperature, and baryon   and isospin chemical potentials
  We study the phases of a two-flavor Nambu-Jona-Lasinio model at finite temperature $T$, baryon and isospin chemical potentials: $\mu_{B}=(\mu_{u}+\mu_{d})/2$, $\mu_{I}=(\mu_{u}-\mu_{d})/2$. This study completes a previous analysis where only small isospin chemical potentials $\mu_{I}$ were considered 
A. Barducci, R. Casalbuoni, G. Pettini, L. Ravagli