2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/101933The massive Gross-Neveu model is solved in the large N limit at finite temperature and chemical potential. The phase diagram features a kink-antikink crystal phase which was missed in previous works. Translated into the framework of condensed matter physics our results generalize the bipolaron lattice in non-degenerate conducting polymers to finite temperature.revtex, 4 pages, 3 figures; v2: minor typos corrected; v3: minor corrections concerning figures 2 and 3High Energy Physics - TheoryStrongly Correlated ElectronsHigh Energy Physics - LatticeHigh Energy Physics - Phenomenologytext