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- W2015611666 abstract "We present a general construction of KMS states in the framework of perturbative algebraic quantum field theory (pAQFT). Our approach may be understood as an extension of the Schwinger-Keldysh formalism. We obtain in particular the Wightman functions at positive temperature, thus solving a problem posed some time ago by Steinmann. The notorious infrared divergences observed in a diagrammatic expansion are shown to be absent due to a consequent exploitation of the locality properties of pAQFT. To this avail, we introduce a novel, Hamiltonian description of the interacting dynamics and find, in particular, a precise relation between relativistic QFT and rigorous quantum statistical mechanics." @default.
- W2015611666 created "2016-06-24" @default.
- W2015611666 creator A5049422551 @default.
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- W2015611666 date "2014-08-12" @default.
- W2015611666 modified "2023-10-16" @default.
- W2015611666 title "Construction of KMS States in Perturbative QFT and Renormalized Hamiltonian Dynamics" @default.
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- W2015611666 doi "https://doi.org/10.1007/s00220-014-2141-7" @default.
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