Inflaton fluctuations in the presence of cosmological defects
arXiv:1405.5804 · doi:10.1088/1475-7516/2014/11/023
Abstract
We study quantum fluctuations of a free massless scalar field during inflation in the presence of a point, line, or plane defect such as a black hole, cosmic string, or domain wall, using a perturbative expansion in powers of small defect parameters. We provide results for the scalar two-point correlation functions that show explicitly a small violation of translational invariance during inflation.
16 pages. arXiv admin note: text overlap with arXiv:0905.2041