Simple Physical Approach to Thermal Cutting Rules
classification
✦ hep-ph
hep-th
keywords
cuttingrulesthermalanalysisapproachcircled-vertexconclusionscutkosky-like
read the original abstract
A first-principles derivation is given of the imaginary part of a Green's function in real-time thermal field theory. The analysis and its conclusions are simpler than in the usual circled-vertex formalism. The relationship to Cutkosky-like cutting rules is explained.
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