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arXiv · hep-th/9704078

3-dimensional Rules for Finite-Temperature Loops

C. Dib·O. Espinosa·I. Schmidt
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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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C. Dib, O. Espinosa, I. Schmidt. 1997-04-09. 3-dimensional Rules for Finite-Temperature Loops. https://doi.org/10.1016/s0370-2693(97)00435-8

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