2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42952We investigate quark matter at finite temperature and finite chemical potential as an example for a relativistic many-particle quantum system. Special relativity is realized through the front form that allows for a Hamiltonian formulation of a statistical operator. Utilizing our previous results we generalize the present formulation of a relativistic thermal field theory to include a finite chemical potential. As an application we use the Nambu-Jona-Lasinio model to investigate the gap equation and chiral restoration.7 pages, 2 figures, RevTex4 StyleHigh Energy Physics - PhenomenologyNuclear Theorytext