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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| Định dạng: | Bài Báo |
| Ngôn ngữ: | English |
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Conell University
2020
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| Truy cập trực tuyến: | https://arxiv.org/abs/2009.06306 https://dlib.phenikaa-uni.edu.vn/handle/PNK/591 |
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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 |
| _version_ |
1751856287932481536 |
| score |
8.887836 |