2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39126Fermion determinant is computed analytically on extremely large lattices $% N_τ\to \infty $ in the toy model approximation in which action is truncated so that in the Hamiltonian limit of $a_τ\to 0$ all terms of order $a_τ/a_σ$ are discarded$.$ Chiral condensate is studied in the area of small ($m<<T$) quark masses.High Energy Physics - LatticeAnalytical study of fermion determinant and chiral condensate behavior at finite temperatures in toy model approximationtext