Münster 2002 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 9: Poster Session: Theory

HK 9.5: Poster

Dienstag, 12. März 2002, 10:30–12:45, Foyer Chemie

Note on finite temperature sum rules for vector and axial-vector spectral functions — •Eugenio Marco¹, Ralf Hofmann², and Wolfram Weise^1,3 — ¹Physik-Department, Technische Universität München — ²Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), — ³ECT^*, Villazzano (Trento), Italy

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 π² f_π², encoding the scale of spontaneous chiral symmetry breaking in QCD. Up to order T² this behavior carries over to the case of finite temperature.

Work supported in part by BMBF, GSI and the Alexander von Humboldt Foundation.