Note on finite temperature sum rules for vector and axial-vector spectral functions
E. Marco, R. Hofmann, W. Weise
Abstract
An updated analysis of vector and axial-vector spectral functions is presented. The resonant contributions to the spectral integrals are shown to be expressible as multiples of 4 pi2 fpi2, encoding the scale of spontaneous chiral symmetry breaking in QCD. Up to order T2 this behavior carries over to the case of finite temperature.
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