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Exact non-linear equations for cosmological perturbations


Gong, Jinn-Ouk; Hwang, Jai-chan; Noh, Hyerim; Wu, David Chan Lon; Yoo, Jaiyul (2017). Exact non-linear equations for cosmological perturbations. Journal of Cosmology and Astroparticle Physics, 2017(10):027.

Abstract

We present a complete set of exact and fully non-linear equations describing all three types of cosmological perturbations—scalar, vector and tensor perturbations. We derive the equations in a thoroughly gauge-ready manner, so that any spatial and temporal gauge conditions can be employed. The equations are completely general without any physical restriction except that we assume a flat homogeneous and isotropic universe as a background. We also comment briefly on the application of our formulation to the non-expanding Minkowski background.

Abstract

We present a complete set of exact and fully non-linear equations describing all three types of cosmological perturbations—scalar, vector and tensor perturbations. We derive the equations in a thoroughly gauge-ready manner, so that any spatial and temporal gauge conditions can be employed. The equations are completely general without any physical restriction except that we assume a flat homogeneous and isotropic universe as a background. We also comment briefly on the application of our formulation to the non-expanding Minkowski background.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:October 2017
Deposited On:09 Jan 2018 21:33
Last Modified:28 Feb 2018 06:27
Publisher:IOP Publishing
ISSN:1475-7516
OA Status:Closed
Publisher DOI:https://doi.org/10.1088/1475-7516/2017/10/027

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