Scattering amplitude and shift in self-energy in medium
classification
✦ hep-th
keywords
self-energyexpansionmediumvirialamplitudeanalysischaracterisedchemical
read the original abstract
Two simple proofs are presented for the first order virial expansion of the self-energy of a particle moving through a medium, characterised by temperature and/or chemical potential(s). One is based on the virial expansion of the self-energy operator itself, while the other is on the analysis of its Feynman diagrams in configuration space.
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