2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40106Meson corrections on chiral condensate up to next-to-leading order in $1/N_c$ expansion at finite density are investigated in NJL model with chiral symmetry explicitly breaking. Compared with the mean-field results, the chiral phase transition is still of first order, while the properties at the critical density of chiral phase transition are found to change significantly.12 pages, 3 figures, 1 figure changed and 1 figure added, conclusion revisedHigh Energy Physics - Phenomenologytext