Spectrum of hot hadronic matter in the axial channel from the QCD sum rules at finite temperatures

The QCD sum rules at finite temperatures have been analysed in the axial channel. It is shown that in hot hadronic matter at Tcr ∼ 140 MeV some specific changes take place in the spectrum of the axial channel, like those detected earlier in the vector channel. It is shown as well, that the temperature dependence of the effective coupling fπ(T) is determined mainly by the behaviour of the quark and gluon field condensates at nonzero temperatures