The null geodesics of charged and non–charged black hole in mimetic gravity
The null geodesics around the charged black hole spacetimes are investigated in the mimetic gravity framework when Einstein's gravity is coupled to a nonlinear electromagnetic field. The photon paths in nonlinear electrodynamics are geodesics of the effective metric which is determined by the b...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321323002316 |
| _version_ | 1797736864359120896 |
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| author | M. Haditale B. Malekolkalami |
| author_facet | M. Haditale B. Malekolkalami |
| author_sort | M. Haditale |
| collection | DOAJ |
| description | The null geodesics around the charged black hole spacetimes are investigated in the mimetic gravity framework when Einstein's gravity is coupled to a nonlinear electromagnetic field. The photon paths in nonlinear electrodynamics are geodesics of the effective metric which is determined by the background metric and the particular nonlinear theory considered. The nonlinear effects are represented by a quadruple moment and appear as a correction term to Reissner Nordstrom (RN) metric and Reissner Nordstrom-anti-de Sitter (RN–(A)dS) in cylindrical metric. Remarkably, the nonlinear effects prevent the circular orbits around black holes, and the presence of the mimetic field can change the repulsive character of dS space to the attractive one. Also, the effect of the mimetic parameter manifests itself in the stronger or weaker gravity of the black hole. |
| first_indexed | 2024-03-12T13:20:09Z |
| format | Article |
| id | doaj.art-1e987f984b3d43de83eed279dd3d72c4 |
| institution | Directory Open Access Journal |
| issn | 0550-3213 |
| language | English |
| last_indexed | 2024-03-12T13:20:09Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-1e987f984b3d43de83eed279dd3d72c42023-08-26T04:42:41ZengElsevierNuclear Physics B0550-32132023-09-01994116302The null geodesics of charged and non–charged black hole in mimetic gravityM. Haditale0B. Malekolkalami1Corresponding author.; Faculty of Science, University of Kurdistan, Sanandaj, P. O. Box 416, IranFaculty of Science, University of Kurdistan, Sanandaj, P. O. Box 416, IranThe null geodesics around the charged black hole spacetimes are investigated in the mimetic gravity framework when Einstein's gravity is coupled to a nonlinear electromagnetic field. The photon paths in nonlinear electrodynamics are geodesics of the effective metric which is determined by the background metric and the particular nonlinear theory considered. The nonlinear effects are represented by a quadruple moment and appear as a correction term to Reissner Nordstrom (RN) metric and Reissner Nordstrom-anti-de Sitter (RN–(A)dS) in cylindrical metric. Remarkably, the nonlinear effects prevent the circular orbits around black holes, and the presence of the mimetic field can change the repulsive character of dS space to the attractive one. Also, the effect of the mimetic parameter manifests itself in the stronger or weaker gravity of the black hole.http://www.sciencedirect.com/science/article/pii/S0550321323002316 |
| spellingShingle | M. Haditale B. Malekolkalami The null geodesics of charged and non–charged black hole in mimetic gravity Nuclear Physics B |
| title | The null geodesics of charged and non–charged black hole in mimetic gravity |
| title_full | The null geodesics of charged and non–charged black hole in mimetic gravity |
| title_fullStr | The null geodesics of charged and non–charged black hole in mimetic gravity |
| title_full_unstemmed | The null geodesics of charged and non–charged black hole in mimetic gravity |
| title_short | The null geodesics of charged and non–charged black hole in mimetic gravity |
| title_sort | null geodesics of charged and non charged black hole in mimetic gravity |
| url | http://www.sciencedirect.com/science/article/pii/S0550321323002316 |
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