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Multiple Scattering Expansion of the Self-Energy at Finite Temperature

Sangyong Jeon·Paul J. Ellis
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Abstract

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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Sangyong Jeon, Paul J. Ellis. 1998-02-04. Multiple Scattering Expansion of the Self-Energy at Finite Temperature. https://doi.org/10.1103/physrevd.58.045013

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