  We evaluate equal time point to point spatial correlation functions of
mesonic currents at finite temperature. For this purpose we consider the QCD
vacuum structure in terms of quark antiquark condensates and their fluctuations
in terms of an irreducible four point structure of the vacuum. The temperature
dependence of quark condensates is modeled using chiral perturbation theory for
low temperatures and lattice QCD simulations near the critical temperature.We
first consider the propagation of quarks in a condensate medium at finite
temperature. We then determine the correlation functions in a hot medium.
Parameters such as mass, coupling constant and threshold energy are deduced
from the finite temperature correlators. We find that all of them decrease
close to the critical temperature.
