Super-horizon effects on the gauge invariant effective energy density in f(R) gravity
arXiv:1910.11066 · doi:10.1103/PhysRevD.100.103509
Abstract
In this article we study the gauge invariant effective energy momentum tensor for cosmological perturbations in f(R) gravity during the inflationary epoch. Considering the super-horizon regime, we derive the effective energy density up to the one-loop corrections. It describes the back-reaction effect of the fluctuations on the background space-time.
arXiv comment18 pages, Accepted for publication in Phys. Rev. D
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