Berlin 2014 – scientific programme

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 7: Quantenfeldtheorie I

MP 7.1: Talk

Wednesday, March 19, 2014, 14:40–15:00, SPA SR125

Generalization of the KMS condition in quantum field theory — •Michael Gransee — Institut für Theoretische Physik, Universität Leipzig — MPI für Mathematik in den Naturwissenschaften, Leipzig

The KMS condition characterizes thermal equilibrium states in quantum statistical mechanics and quantum field theory. It is based on certain analytical and periodicity conditions of correlation functions. The characterization of non-equilibrium states which locally still have thermal properties constitutes a challenge in quantum field theory. Analyzing the analyticity properties of KMS states, a proposal for a generalized KMS condition is made in the case of the free scalar field. The relations of that condition to a related proposal for characterizing local thermal equilibrium states by D. Buchholz et al. are investigated. This is joint work with Nicola Pinamonti (Genova) and Rainer Verch (Leipzig).