  Theoretical understanding of experimental results from relativistic heavy-ion
collisions requires a microscopic approach to the behavior of QCD n-point
functions at finite temperatures, as given by the hierarchy of Dyson-Schwinger
equations, properly generalized within the Matsubara formalism. The technical
complexity of related finite-temperature calculations however mandates
modeling. We present a model where the QCD interaction in the infrared,
nonperturbative domain, is modeled by a separable form. Results for the mass
spectrum of light quark flavors at finite temperature are presented.
