Gravastar in the framework of Loop Quantum Cosmology
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866910012329164800 |
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| author | Ghosh, Shounak Sengupta, Rikpratik Kalam, Mehedi |
| author_facet | Ghosh, Shounak Sengupta, Rikpratik Kalam, Mehedi |
| contents | In this paper we attempt to construct a regular gravastar model using the UV corrected framework of Loop Quantum Cosmology. We find that a stable gravastar model can be constructed with a number of unique features: (i) no thin shell approximation needs to be invoked to obtain solutions in the shell which can be considered to be of a finite thickness, (ii) the central singularity of a self gravitating object can be averted by a bounce mechanism, such that the interior density of the gravastar reaches a maximum critical density and cannot be raised further due to an operative repulsive force, (iii) the inherent isotropy of the effective fluid description does not prevent the formation of a stable gravastar and anisotropic pressures is not an essential requirement. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2311_00692 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Gravastar in the framework of Loop Quantum Cosmology Ghosh, Shounak Sengupta, Rikpratik Kalam, Mehedi General Relativity and Quantum Cosmology Astrophysics of Galaxies In this paper we attempt to construct a regular gravastar model using the UV corrected framework of Loop Quantum Cosmology. We find that a stable gravastar model can be constructed with a number of unique features: (i) no thin shell approximation needs to be invoked to obtain solutions in the shell which can be considered to be of a finite thickness, (ii) the central singularity of a self gravitating object can be averted by a bounce mechanism, such that the interior density of the gravastar reaches a maximum critical density and cannot be raised further due to an operative repulsive force, (iii) the inherent isotropy of the effective fluid description does not prevent the formation of a stable gravastar and anisotropic pressures is not an essential requirement. |
| title | Gravastar in the framework of Loop Quantum Cosmology |
| topic | General Relativity and Quantum Cosmology Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2311.00692 |