Supersymmetric theories at finite temperature

New nonperturbative techniques make possible the calculation of thermodynamic properties of supersymmetric gauge theories. We apply them to supersymmetric QCD at large N_c, with a Chern-Simons term included to give mass to the adjoint partons. The theory is solved nonpertur-batively by the technique of supersymmetric discrete light-cone quantization, which uses a discrete momentum grid in light-cone coordinates to convert integral equations for Fock-space wave functions to a supersymmetric matrix representation. The spectral distribution of the representation is computed by Lanczos iteration of the mass-squared eigenvalue problem. Thermodynamic quantities are then computed from an analytic fit to this spectrum.