Staff View: Stability analysis of (an)isotropic inflation in Ricci-inverse gravity

Stability analysis of (an)isotropic inflation in Ricci-inverse gravity

We study a recent proposed Ricci-inverse gravity, which is a very novel type of fourth-order gravity. In particular, we are able to figure out both isotropically and anisotropically inflating universes to this model. More interestingly, these solutions are free from a singularity problem. However, s...

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Main Author:	Tuan Q. Do
Format:	Article
Language:	English
Published:	Conell University 2020
Subjects:	General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics
Online Access:	https://arxiv.org/abs/2009.06306 https://dlib.phenikaa-uni.edu.vn/handle/PNK/591
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spelling	oai:localhost:PNK-5912022-08-17T05:54:38Z Stability analysis of (an)isotropic inflation in Ricci-inverse gravity Tuan Q. Do General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics We study a recent proposed Ricci-inverse gravity, which is a very novel type of fourth-order gravity. In particular, we are able to figure out both isotropically and anisotropically inflating universes to this model. More interestingly, these solutions are free from a singularity problem. However, stability analysis based on the dynamical system method shows that both isotropic and anisotropic inflation of this model turn out to be unstable against field perturbations. This result indicates that the Ricci-inverse gravity might not be compatible with the inflationary phase of the universe. 2020-10-13T04:36:19Z 2020-10-13T04:36:19Z 2020 Article Working Paper arXiv:2009.06306 https://arxiv.org/abs/2009.06306 https://dlib.phenikaa-uni.edu.vn/handle/PNK/591 en application/pdf Conell University
institution	Digital Phenikaa
collection	Digital Phenikaa
language	English
topic	General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics
spellingShingle	General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics Tuan Q. Do Stability analysis of (an)isotropic inflation in Ricci-inverse gravity
description	We study a recent proposed Ricci-inverse gravity, which is a very novel type of fourth-order gravity. In particular, we are able to figure out both isotropically and anisotropically inflating universes to this model. More interestingly, these solutions are free from a singularity problem. However, stability analysis based on the dynamical system method shows that both isotropic and anisotropic inflation of this model turn out to be unstable against field perturbations. This result indicates that the Ricci-inverse gravity might not be compatible with the inflationary phase of the universe.
format	Article
author	Tuan Q. Do
author_facet	Tuan Q. Do
author_sort	Tuan Q. Do
title	Stability analysis of (an)isotropic inflation in Ricci-inverse gravity
title_short	Stability analysis of (an)isotropic inflation in Ricci-inverse gravity
title_full	Stability analysis of (an)isotropic inflation in Ricci-inverse gravity
title_fullStr	Stability analysis of (an)isotropic inflation in Ricci-inverse gravity
title_full_unstemmed	Stability analysis of (an)isotropic inflation in Ricci-inverse gravity
title_sort	stability analysis of (an)isotropic inflation in ricci-inverse gravity
publisher	Conell University
publishDate	2020
url	https://arxiv.org/abs/2009.06306 https://dlib.phenikaa-uni.edu.vn/handle/PNK/591
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score	8.887836

Stability analysis of (an)isotropic inflation in Ricci-inverse gravity

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