New Anisotropic Exact Solution in Multifield Cosmology

In the case of two-scalar field cosmology, and specifically for the Chiral model, we determine an exact solution for the field equations with an anisotropic background space. The exact solution can describe anisotropic inflation with a Kantowski–Sachs geometry and can be seen as the anisotropic anal...

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Main Author:	Andronikos Paliathanasis
Format:	Article
Language:	English
Published:	MDPI AG 2021-08-01
Series:	Universe
Subjects:	multifield cosmology anisotropic spacetimes Kantowski–Sachs anisotropic inflation
Online Access:	https://www.mdpi.com/2218-1997/7/9/323

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spelling	doaj-5422363e023c4f96a098b352bec839dd2021-09-26T01:34:41ZengMDPI AGUniverse2218-19972021-08-01732332310.3390/universe7090323New Anisotropic Exact Solution in Multifield CosmologyAndronikos Paliathanasis0Institute of Systems Science, Durban University of Technology, P.O. Box 1334, Durban 4000, South AfricaIn the case of two-scalar field cosmology, and specifically for the Chiral model, we determine an exact solution for the field equations with an anisotropic background space. The exact solution can describe anisotropic inflation with a Kantowski–Sachs geometry and can be seen as the anisotropic analogue of the hyperbolic inflation. Finally, we investigate the stability conditions for the exact solution.https://www.mdpi.com/2218-1997/7/9/323multifield cosmologyanisotropic spacetimesKantowski–Sachsanisotropic inflation
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Andronikos Paliathanasis
spellingShingle	Andronikos Paliathanasis New Anisotropic Exact Solution in Multifield Cosmology Universe multifield cosmology anisotropic spacetimes Kantowski–Sachs anisotropic inflation
author_facet	Andronikos Paliathanasis
author_sort	Andronikos Paliathanasis
title	New Anisotropic Exact Solution in Multifield Cosmology
title_short	New Anisotropic Exact Solution in Multifield Cosmology
title_full	New Anisotropic Exact Solution in Multifield Cosmology
title_fullStr	New Anisotropic Exact Solution in Multifield Cosmology
title_full_unstemmed	New Anisotropic Exact Solution in Multifield Cosmology
title_sort	new anisotropic exact solution in multifield cosmology
publisher	MDPI AG
series	Universe
issn	2218-1997
publishDate	2021-08-01
description	In the case of two-scalar field cosmology, and specifically for the Chiral model, we determine an exact solution for the field equations with an anisotropic background space. The exact solution can describe anisotropic inflation with a Kantowski–Sachs geometry and can be seen as the anisotropic analogue of the hyperbolic inflation. Finally, we investigate the stability conditions for the exact solution.
topic	multifield cosmology anisotropic spacetimes Kantowski–Sachs anisotropic inflation
url	https://www.mdpi.com/2218-1997/7/9/323
work_keys_str_mv	AT andronikospaliathanasis newanisotropicexactsolutioninmultifieldcosmology
_version_	1716868688801431552

New Anisotropic Exact Solution in Multifield Cosmology

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