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Renormalization of nonequilibrium dynamics in FRW cosmology

Journal Article · · Physical Review, D
; ;  [1]
  1. Institut fuer Physik, Universitaet Dortmund, D-44221 Dortmund (Germany)
We derive the renormalized nonequilibrium equations of motion for a scalar field and its quantum back reaction in a conformally flat Friedmann-Robertson-Walker universe. We use a fully covariant formalism proposed by us recently for handling numerically and analytically nonequilibrium dynamics in the one-loop approximation. The system is assumed to be in a conformal vacuum state initially. We use dimensional regularization; we find that the counterterms can be chosen independent of the initial conditions though the divergent leading order graphs do depend on them. {copyright} {ital 1997} {ital The American Physical Society}
OSTI ID:
545066
Journal Information:
Physical Review, D, Journal Name: Physical Review, D Journal Issue: 10 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English

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