Stability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holes
Abstract We investigated the Strong Cosmic Censorship (SCC) conjecture in Einstein–Power–Maxwell–de Sitter (EPMdS) black holes by analyzing the quasinormal modes (QNMs) of a massless neutral scalar field perturbation. Using the pseudospectral method, we calculated the QNM frequencies across various...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2024-11-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13512-z |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846100969786441728 |
|---|---|
| author | Lu Chen Fei Li |
| author_facet | Lu Chen Fei Li |
| author_sort | Lu Chen |
| collection | DOAJ |
| description | Abstract We investigated the Strong Cosmic Censorship (SCC) conjecture in Einstein–Power–Maxwell–de Sitter (EPMdS) black holes by analyzing the quasinormal modes (QNMs) of a massless neutral scalar field perturbation. Using the pseudospectral method, we calculated the QNM frequencies across various cosmological constants and nonlinear electromagnetic parameters. Our results show that for black holes far from extremality, the lowest QNM frequency $$-\text {Im} (\omega )/\kappa _-$$ - Im ( ω ) / κ - remains below 1/2. However, as the black holes approach extremality, the lowest mode’s $$-\text {Im} (\omega )/\kappa _-$$ - Im ( ω ) / κ - consistently exceeds 1/2, leading to a violation of SCC. Moreover, with a fixed cosmological constant, as the nonlinearity parameter $$\alpha $$ α increases, the interval of SCC violation under the charge extremality ratio narrows. Considering that $$k = 1/2 + 1/\alpha $$ k = 1 / 2 + 1 / α is inversely proportional to $$\alpha $$ α , our results indicate that increasing the order k of the non-linear electromagnetic field can effectively mitigate SCC violations. |
| format | Article |
| id | doaj-art-422071c0b5fe490e8ed7199e18dfcbe5 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-422071c0b5fe490e8ed7199e18dfcbe52024-12-29T12:42:58ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-11-0184111810.1140/epjc/s10052-024-13512-zStability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holesLu Chen0Fei Li1School of Physics, Changchun Normal UniversityDepartment of Physics, Southern University of Science and TechnologyAbstract We investigated the Strong Cosmic Censorship (SCC) conjecture in Einstein–Power–Maxwell–de Sitter (EPMdS) black holes by analyzing the quasinormal modes (QNMs) of a massless neutral scalar field perturbation. Using the pseudospectral method, we calculated the QNM frequencies across various cosmological constants and nonlinear electromagnetic parameters. Our results show that for black holes far from extremality, the lowest QNM frequency $$-\text {Im} (\omega )/\kappa _-$$ - Im ( ω ) / κ - remains below 1/2. However, as the black holes approach extremality, the lowest mode’s $$-\text {Im} (\omega )/\kappa _-$$ - Im ( ω ) / κ - consistently exceeds 1/2, leading to a violation of SCC. Moreover, with a fixed cosmological constant, as the nonlinearity parameter $$\alpha $$ α increases, the interval of SCC violation under the charge extremality ratio narrows. Considering that $$k = 1/2 + 1/\alpha $$ k = 1 / 2 + 1 / α is inversely proportional to $$\alpha $$ α , our results indicate that increasing the order k of the non-linear electromagnetic field can effectively mitigate SCC violations.https://doi.org/10.1140/epjc/s10052-024-13512-z |
| spellingShingle | Lu Chen Fei Li Stability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holes European Physical Journal C: Particles and Fields |
| title | Stability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holes |
| title_full | Stability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holes |
| title_fullStr | Stability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holes |
| title_full_unstemmed | Stability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holes |
| title_short | Stability of Cauchy horizon in Einstein–Power–Maxwell–de Sitter black holes |
| title_sort | stability of cauchy horizon in einstein power maxwell de sitter black holes |
| url | https://doi.org/10.1140/epjc/s10052-024-13512-z |
| work_keys_str_mv | AT luchen stabilityofcauchyhorizonineinsteinpowermaxwelldesitterblackholes AT feili stabilityofcauchyhorizonineinsteinpowermaxwelldesitterblackholes |