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Title: Inflaton fluctuations in the presence of cosmological defects

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.

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
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2014; Journal Issue: 11; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BLACK HOLES; CORRELATION FUNCTIONS; CRYSTAL DEFECTS; FLUCTUATIONS; SCALAR FIELDS

Citation Formats

Cho, Hing-Tong, Wang, I-Chin, and Ng, Kin-Wang. Inflaton fluctuations in the presence of cosmological defects. United States: N. p., 2014. Web. doi:10.1088/1475-7516/2014/11/023.
Cho, Hing-Tong, Wang, I-Chin, & Ng, Kin-Wang. Inflaton fluctuations in the presence of cosmological defects. United States. https://doi.org/10.1088/1475-7516/2014/11/023
Cho, Hing-Tong, Wang, I-Chin, and Ng, Kin-Wang. 2014. "Inflaton fluctuations in the presence of cosmological defects". United States. https://doi.org/10.1088/1475-7516/2014/11/023.
@article{osti_22375748,
title = {Inflaton fluctuations in the presence of cosmological defects},
author = {Cho, Hing-Tong and Wang, I-Chin and Ng, Kin-Wang},
abstractNote = {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.},
doi = {10.1088/1475-7516/2014/11/023},
url = {https://www.osti.gov/biblio/22375748}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 11,
volume = 2014,
place = {United States},
year = {Sat Nov 01 00:00:00 EDT 2014},
month = {Sat Nov 01 00:00:00 EDT 2014}
}