QCD SUM-RULES AT FINITE-TEMPERATURE - ART. NO. 096011

We derive thermal QCD sum rules for the correlation function of two ve ctor currents in the rho-meson channel. It takes into account the lead ing non-perturbative corrections from the additional operators, which appear due to the breakdown of Lorentz invariance at finite temperatur e. The mixing of the new operators has a drastic effect on their coeff icients. The thermal average of all the operators can be related to th at of the quark condensate and the energy density. The sum rules then yield the temperature dependence of the parameters of the rho meson, n amely its mass and coupling to the vector current. Our result is that these parameters are practically independent of temperature at least u p to a temperature of 125 MeV. [S0556-2821(98)03921-2]