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:
-
- Department of Physics, Tamkang University, No. 151, Yingzhuan Road, Tamsui Dist., New Taipei City 25137, Taiwan (China)
- 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}
}
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