Greybody factor for an electrically charged regular-de Sitter black holes in $d$-dimensions
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2021
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| _version_ | 1866915247972941824 |
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| author | Ali, Md Sabir Kumara, A. Naveena Hegde, Kartheek Rizwan, C. L. Ahmed Punacha, Shreyas Ajith, K. M. |
| author_facet | Ali, Md Sabir Kumara, A. Naveena Hegde, Kartheek Rizwan, C. L. Ahmed Punacha, Shreyas Ajith, K. M. |
| contents | We investigate the propagation of scalar fields in the gravitational background of higher-dimensional, electrically charged, regular de Sitter black holes. Using an approximate analytical approach, we derive expressions for the greybody factor for both minimally and non-minimally coupled scalar fields. In the low-energy regime, we find that the greybody factor remains non-zero for minimal coupling but vanishes for non-minimal coupling, indicating a significant influence of curvature coupling on the emission profile. Examining the greybody factor alongside the effective potential, we explore how particle parameters (the angular momentum number and the non-minimal coupling constant) and spacetime parameters (the dimension, the cosmological constant, and the non-linear charge parameter) affect particle emission. While non-minimal coupling and higher angular momentum modes generally suppress the greybody factor, the non-linear charge parameter enhances it. We then compute the Hawking radiation spectra for these black holes and observe that, despite the non-linear charge enhancing the greybody factor, both non-minimal coupling and the non-linear charge ultimately reduce the total energy emission rate. These results provide insights into how modifications to classical black hole solutions in higher dimensions, through the inclusion of non-linear electrodynamics, impact their quantum emission properties. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2105_05730 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Greybody factor for an electrically charged regular-de Sitter black holes in $d$-dimensions Ali, Md Sabir Kumara, A. Naveena Hegde, Kartheek Rizwan, C. L. Ahmed Punacha, Shreyas Ajith, K. M. General Relativity and Quantum Cosmology We investigate the propagation of scalar fields in the gravitational background of higher-dimensional, electrically charged, regular de Sitter black holes. Using an approximate analytical approach, we derive expressions for the greybody factor for both minimally and non-minimally coupled scalar fields. In the low-energy regime, we find that the greybody factor remains non-zero for minimal coupling but vanishes for non-minimal coupling, indicating a significant influence of curvature coupling on the emission profile. Examining the greybody factor alongside the effective potential, we explore how particle parameters (the angular momentum number and the non-minimal coupling constant) and spacetime parameters (the dimension, the cosmological constant, and the non-linear charge parameter) affect particle emission. While non-minimal coupling and higher angular momentum modes generally suppress the greybody factor, the non-linear charge parameter enhances it. We then compute the Hawking radiation spectra for these black holes and observe that, despite the non-linear charge enhancing the greybody factor, both non-minimal coupling and the non-linear charge ultimately reduce the total energy emission rate. These results provide insights into how modifications to classical black hole solutions in higher dimensions, through the inclusion of non-linear electrodynamics, impact their quantum emission properties. |
| title | Greybody factor for an electrically charged regular-de Sitter black holes in $d$-dimensions |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2105.05730 |