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3-dimensional Rules for Finite-Temperature Loops

C. Dib, O. Espinosa, I. Schmidt

hep-tharXiv:hep-th/9704078

Abstract

We present simple diagrammatic rules to write down Euclidean n-point functions at finite temperature directly in terms of 3-dimensional momentum integrals, without ever performing a single Matsubara sum. The rules can be understood as describing the interaction of the external particles with those of the thermal bath.

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