Low-Temperature Relations in QCD.

The low-temperature relations for the trace of the energy–momentum tensor in QCD with two and three quarks are obtained. It is shown that the temperature derivatives of the anomalous and normal (quark massive term) contributions to the trace of the energy–momentum tensor in QCD are equal to each other in the low-temperature region. Leading corrections connected with ππ interaction and thermal excitations of K and η mesons are calculated.© 2004 MAIK “Nauka / Interperiodica”. [ABSTRACT FROM AUTHOR]