Multiple Scattering Expansion of the Self-Energy at Finite Temperature

Details Multiple Scattering Expansion of the Self-Energy at Finite Temperature Multiple Scattering Expansion of the Self-Energy at Finite Temperature

1998-02-04

arxiv.org/abs/hep-ph/9802246v1

Phys.Rev.D58:045013,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages. Uses ReVTeX and epsf. 8 figures

Scientific paper

10.1103/PhysRevD.58.045013

An often used rule that the thermal correction to the self-energy is the thermal phase-space times the forward scattering amplitude from target particles is shown to be the leading term in an exact multiple scattering expansion. Starting from imaginary-time finite-temperature field theory, a rigorous expansion for the retarded self-energy is derived. The relationship to the thermodynamic potential is briefly discussed.

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