Scattering amplitude and shift in self-energy in medium

Details Scattering amplitude and shift in self-energy in medium Scattering amplitude and shift in self-energy in medium

2001-08-20

arxiv.org/abs/hep-th/0108139v1

Eur.Phys.J.C24:143-147,2002

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, revtex, with 1 eps figure

Scientific paper

10.1007/s100520200909

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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