Radiative corrections and renormalization at finite temperature: A real-time approach

Details Radiative corrections and renormalization at finite temperature: A real-time approach Radiative corrections and renormalization at finite temperature: A real-time approach

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvd..40.1176k&link_type=abstract

Physical Review D (Particles and Fields), Volume 40, Issue 4, 15 August 1989, pp.1176-1198

Astronomy and Astrophysics

Astrophysics

40

Scientific paper

We analyze the one-loop radiative corrections to finite-temperature decay and scattering rates, using techniques based on the Niemi-Semenoff time-path formulation of finite-temperature field theory. Previous work is examined in the context of our general framework. We find that the finite-temperature part of the self-energy corrections cannot be absorbed into mass and wave-function renormalization counterterms and argue that finite-temperature renormalization is not a meaningful concept. We give an explicit algorithm for the calculation of the finite-temperature self-energy corrections and discuss applications in cosmology and astrophysics.

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