A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matter
We provide a new regular black hole solution (RBH) in Einstein Gauss-Bonnet (EGB) gravity with localized sources of matter in the energy–momentum tensor. We determine the necessary constraints in order for the solution to be regular. Although we use a specific form for the energy density as a test o...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-09-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269323004240 |
| _version_ | 1797736871741095936 |
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| author | Milko Estrada Rodrigo Aros |
| author_facet | Milko Estrada Rodrigo Aros |
| author_sort | Milko Estrada |
| collection | DOAJ |
| description | We provide a new regular black hole solution (RBH) in Einstein Gauss-Bonnet (EGB) gravity with localized sources of matter in the energy–momentum tensor. We determine the necessary constraints in order for the solution to be regular. Although we use a specific form for the energy density as a test of proof, these constraints could serve as a recipe for constructing several new RBH solutions in EGB gravity with localized sources. Due to that the usual first law of thermodynamics is not valid for RBH, so we rewrite the first law for EGB, which leads to correct values of entropy and volume. The size of the extremal black hole, whose temperature vanishes, becomes smaller for larger dimensions, whose radius could be of the order of the Planck units, thus the evaporation would stop once the horizon radius contracts up to a value close to the Planck length, which could be related with the apparition of quantum effects. Furthermore, the presence of matter fields in the energy–momentum tensor induces two phase transitions, where there are two regions of stability. This differs from the vacuum EGB solution, where the specific heat is always negative without phase transition as occurs in Schwarzschild black hole. |
| first_indexed | 2024-03-12T13:20:20Z |
| format | Article |
| id | doaj.art-53c1d28f9b55420fb8dbcd8ad684f999 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-03-12T13:20:20Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-53c1d28f9b55420fb8dbcd8ad684f9992023-08-26T04:42:33ZengElsevierPhysics Letters B0370-26932023-09-01844138090A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matterMilko Estrada0Rodrigo Aros1Facultad de Ingeniería, Ciencia y Tecnología, Universidad Bernardo O'Higgins, Av. Viel 1497, Santiago 8370993, Chile; Corresponding author.Departamento de Ciencias Fisicas, Universidad Andres Bello, Av. Republica 252, Santiago 8370134, ChileWe provide a new regular black hole solution (RBH) in Einstein Gauss-Bonnet (EGB) gravity with localized sources of matter in the energy–momentum tensor. We determine the necessary constraints in order for the solution to be regular. Although we use a specific form for the energy density as a test of proof, these constraints could serve as a recipe for constructing several new RBH solutions in EGB gravity with localized sources. Due to that the usual first law of thermodynamics is not valid for RBH, so we rewrite the first law for EGB, which leads to correct values of entropy and volume. The size of the extremal black hole, whose temperature vanishes, becomes smaller for larger dimensions, whose radius could be of the order of the Planck units, thus the evaporation would stop once the horizon radius contracts up to a value close to the Planck length, which could be related with the apparition of quantum effects. Furthermore, the presence of matter fields in the energy–momentum tensor induces two phase transitions, where there are two regions of stability. This differs from the vacuum EGB solution, where the specific heat is always negative without phase transition as occurs in Schwarzschild black hole.http://www.sciencedirect.com/science/article/pii/S0370269323004240 |
| spellingShingle | Milko Estrada Rodrigo Aros A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matter Physics Letters B |
| title | A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matter |
| title_full | A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matter |
| title_fullStr | A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matter |
| title_full_unstemmed | A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matter |
| title_short | A new class of regular black holes in Einstein Gauss-Bonnet gravity with localized sources of matter |
| title_sort | new class of regular black holes in einstein gauss bonnet gravity with localized sources of matter |
| url | http://www.sciencedirect.com/science/article/pii/S0370269323004240 |
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