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TT: Tiefe Temperaturen

TT 3: Spin-Systeme und itinerante Magnete

TT 3.7: Talk

Monday, March 8, 2004, 11:00–11:15, H18

Integral representations of correlation functions for the anisotropic Heisenberg chain at finite temperatures — •Frank Göhmann and Alexander Seel — Fachbereich C, Physik, Bergische Universität Wuppertal, 42097 Wuppertal

We derived novel integral representations for correlation functions of the anisotropic Heisenberg chain at finite values of the temperature and the applied magnetic field. Our work is based on a combination of Bethe ansatz techniques for the calculation of matrix elements with the quantum transfer matrix approach.