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The Gross-Neveu model in 1+1 dimensions is generalized to the case ofdifferent scalar and pseudoscalar coupling constants. This enables us tointerpolate smoothly between the standard massless Gross-Neveu models witheither discrete or continuous chiral symmetry. We present the solution of thegeneralized model in the large N limit including the vacuum,fermion-antifermion scattering and bound states, solitonic baryons withfractional baryon number and the full phase diagram at finite temperature andchemical potential.

Large N solution of generalized Gross-Neveu model with two coupling constants