One-loop Corrections to Scalar and Tensor Perturbations during Inflation in Stochastic Gravity

Details One-loop Corrections to Scalar and Tensor Perturbations during Inflation in Stochastic Gravity One-loop Corrections to Scalar and Tensor Perturbations during Inflation in Stochastic Gravity

2007-12-30

arxiv.org/abs/0801.0126v3

Phys.Rev.D78:064004,2008

Physics

High Energy Physics

High Energy Physics - Theory

17pages, 2figures, typos corrected, to appear in PRD

Scientific paper

10.1103/PhysRevD.78.064004

Based on the stochastic gravity, we study the loop corrections to the scalar and tensor perturbations during inflation. Since the loop corrections to scalar perturbations suffer infrared (IR) divergence, we consider the IR regularization to obtain the finite value. We find that the loop corrections to the scalar perturbations are amplified by the e-folding; in other words there appear the logarithmic correction, just as discussed by M.Sloth et al. On the other hand, we find that the tensor perturbations do not suffer from infrared divergence.

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