Linear perturbations and stability analysis in f(T) Braneworld scenario
We conduct a detailed analysis of the full linear perturbations in the braneworld scenario within f(T) gravity. By decomposing the perturbations of the theory into the scalar, transverse vector, antisymmetric pseudotensor, and symmetric transverse-traceless tensor modes, we derive the quadratic acti...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Physics Letters B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269324007196 |
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| author | Ju-Ying Zhao Mao-Jiang Liu Ke Yang |
| author_facet | Ju-Ying Zhao Mao-Jiang Liu Ke Yang |
| author_sort | Ju-Ying Zhao |
| collection | DOAJ |
| description | We conduct a detailed analysis of the full linear perturbations in the braneworld scenario within f(T) gravity. By decomposing the perturbations of the theory into the scalar, transverse vector, antisymmetric pseudotensor, and symmetric transverse-traceless tensor modes, we derive the quadratic action for each mode. The results indicate that there is a total of one scalar, one massless vector, and one tensor propagating degrees of freedom. Consequently, in comparison to general relativity, no additional degrees of freedom appear under the flat braneworld background in the linearized theory. For a thick brane model with f(T)=T+αT2, we find that it exhibits stability against linear perturbations. |
| format | Article |
| id | doaj-art-578b5c35b1584bdb9a6fa72089ed86d0 |
| institution | Kabale University |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-578b5c35b1584bdb9a6fa72089ed86d02025-01-10T04:37:20ZengElsevierPhysics Letters B0370-26932025-01-01860139161Linear perturbations and stability analysis in f(T) Braneworld scenarioJu-Ying Zhao0Mao-Jiang Liu1Ke Yang2School of Physical Science and Technology, Southwest University, Chongqing 400715, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing 400715, ChinaCorresponding author.; School of Physical Science and Technology, Southwest University, Chongqing 400715, ChinaWe conduct a detailed analysis of the full linear perturbations in the braneworld scenario within f(T) gravity. By decomposing the perturbations of the theory into the scalar, transverse vector, antisymmetric pseudotensor, and symmetric transverse-traceless tensor modes, we derive the quadratic action for each mode. The results indicate that there is a total of one scalar, one massless vector, and one tensor propagating degrees of freedom. Consequently, in comparison to general relativity, no additional degrees of freedom appear under the flat braneworld background in the linearized theory. For a thick brane model with f(T)=T+αT2, we find that it exhibits stability against linear perturbations.http://www.sciencedirect.com/science/article/pii/S0370269324007196Extra dimensionsBraneworld scenariof(T) gravityLinear perturbationsStability analysis |
| spellingShingle | Ju-Ying Zhao Mao-Jiang Liu Ke Yang Linear perturbations and stability analysis in f(T) Braneworld scenario Physics Letters B Extra dimensions Braneworld scenario f(T) gravity Linear perturbations Stability analysis |
| title | Linear perturbations and stability analysis in f(T) Braneworld scenario |
| title_full | Linear perturbations and stability analysis in f(T) Braneworld scenario |
| title_fullStr | Linear perturbations and stability analysis in f(T) Braneworld scenario |
| title_full_unstemmed | Linear perturbations and stability analysis in f(T) Braneworld scenario |
| title_short | Linear perturbations and stability analysis in f(T) Braneworld scenario |
| title_sort | linear perturbations and stability analysis in f t braneworld scenario |
| topic | Extra dimensions Braneworld scenario f(T) gravity Linear perturbations Stability analysis |
| url | http://www.sciencedirect.com/science/article/pii/S0370269324007196 |
| work_keys_str_mv | AT juyingzhao linearperturbationsandstabilityanalysisinftbraneworldscenario AT maojiangliu linearperturbationsandstabilityanalysisinftbraneworldscenario AT keyang linearperturbationsandstabilityanalysisinftbraneworldscenario |