Quantum geometric formulation of Brans-Dicke theory for Bianchi I spacetime
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866915161894289408 |
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| author | Sharma, Manabendra Vicente, Gustavo S. Graef, Leila L. Ramos, Rudnei O. Wang, Anzhong |
| author_facet | Sharma, Manabendra Vicente, Gustavo S. Graef, Leila L. Ramos, Rudnei O. Wang, Anzhong |
| contents | This paper investigates Bianchi I spacetimes within the Jordan frame of Brans-Dicke theory, incorporating the framework of effective loop quantum gravity. After developing general formulas, we analyze the robustness of classical singularity resolution due to quantum geometric effects using two common quantization schemes. We then compare the resulting physical properties. We find that both schemes replace classical singularities with regular quantum bounces. Notably, in contrast to similar studies based on general relativity, we find that all three directional scale factors of the Bianchi I spacetimes increase and after the quantum bounce they reach values similar to their initial values, leading to a merging with classical spacetimes in both schemes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_01080 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Quantum geometric formulation of Brans-Dicke theory for Bianchi I spacetime Sharma, Manabendra Vicente, Gustavo S. Graef, Leila L. Ramos, Rudnei O. Wang, Anzhong General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory Mathematical Physics This paper investigates Bianchi I spacetimes within the Jordan frame of Brans-Dicke theory, incorporating the framework of effective loop quantum gravity. After developing general formulas, we analyze the robustness of classical singularity resolution due to quantum geometric effects using two common quantization schemes. We then compare the resulting physical properties. We find that both schemes replace classical singularities with regular quantum bounces. Notably, in contrast to similar studies based on general relativity, we find that all three directional scale factors of the Bianchi I spacetimes increase and after the quantum bounce they reach values similar to their initial values, leading to a merging with classical spacetimes in both schemes. |
| title | Quantum geometric formulation of Brans-Dicke theory for Bianchi I spacetime |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory Mathematical Physics |
| url | https://arxiv.org/abs/2309.01080 |