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On real‐time evolution in cosmology
Author(s) -
Perlt H.
Publication year - 1990
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113110306
Subject(s) - physics , time evolution , cosmology , scalar field , space time , universe , einstein field equations , spacetime , friedmann equations , evolution equation , classical mechanics , theoretical physics , field (mathematics) , einstein , quantum mechanics , dark energy , mathematical analysis , mathematics , chemical engineering , pure mathematics , engineering
Real‐time evolution plays an important role to understand the dynamics of the early Universe. It would be of importance to be able to investigate such typical time dependent processes like particle production, reheating, creation and evolution of fluctuations, etc. In this paper we derive the one‐loop renormalized coupled einstein field equations of a scalar field with λϕ 4 interaction in a classical curved space‐time of Friedmann‐Robertson‐Walker type. These equations can be used to calculate quantum corrections for the dynamics in the early Universe.