Linearized Stability of Harada Thin-Shell Wormholes
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929652997554176 |
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| author | Alshal, Hassan Ding, Leyang Hernandez, Adelina Illing, Leo A. Rydstrom, Ivar |
| author_facet | Alshal, Hassan Ding, Leyang Hernandez, Adelina Illing, Leo A. Rydstrom, Ivar |
| contents | Using Darmois-Israel-Sen junction conditions, and with help of Visser's cut-and-paste method, we study the dynamics of thin-shell wormholes that are made of two conformally Killing gravity (a.k.a Harada gravity) black holes. We check the energy conditions for different values of the new parameter that Harada introduced, as alternative for dark energy. We examine the radial acceleration to reveal the attractive and repulsive characteristics of the thin-shell wormhole throat. We consider the dynamics and stability of the wormhole around the static solutions of the linearized radial perturbations at the wormhole throat. Finally, we determine the regions of stability by applying the concavity test on the ``speed of sound'' as a function in the throat radius and other spacetime parameters, particularly the new Harada parameter. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2407_08945 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Linearized Stability of Harada Thin-Shell Wormholes Alshal, Hassan Ding, Leyang Hernandez, Adelina Illing, Leo A. Rydstrom, Ivar General Relativity and Quantum Cosmology High Energy Physics - Theory Using Darmois-Israel-Sen junction conditions, and with help of Visser's cut-and-paste method, we study the dynamics of thin-shell wormholes that are made of two conformally Killing gravity (a.k.a Harada gravity) black holes. We check the energy conditions for different values of the new parameter that Harada introduced, as alternative for dark energy. We examine the radial acceleration to reveal the attractive and repulsive characteristics of the thin-shell wormhole throat. We consider the dynamics and stability of the wormhole around the static solutions of the linearized radial perturbations at the wormhole throat. Finally, we determine the regions of stability by applying the concavity test on the ``speed of sound'' as a function in the throat radius and other spacetime parameters, particularly the new Harada parameter. |
| title | Linearized Stability of Harada Thin-Shell Wormholes |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2407.08945 |