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Title: Inflaton fluctuations in the presence of cosmological defects

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.
Authors:
;  [1] ;  [2]
  1. Department of Physics, Tamkang University, No. 151, Yingzhuan Road, Tamsui Dist., New Taipei City 25137, Taiwan (China)
  2. Institute of Physics, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan (China)
Publication Date:
OSTI Identifier:
22375748
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 11; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BLACK HOLES; CORRELATION FUNCTIONS; CRYSTAL DEFECTS; FLUCTUATIONS; SCALAR FIELDS