Coherent State Description of Gravitational Waves from Binary Black Holes
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866908836534681600 |
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| author | Kanno, Sugumi Soda, Jiro Taniguchi, Akira |
| author_facet | Kanno, Sugumi Soda, Jiro Taniguchi, Akira |
| contents | Quantum mechanics is the fundamental framework of nature, and gravitational waves from binary black holes during the inspiral phase should likewise be analyzed quantum mechanically. It is commonly assumed that their classical description corresponds to a coherent state, so any deviation would signal genuinely quantum nature of gravity. We show that the coherent-state description reproduces classical gravitational waves at leading order, while next-order effects generate squeezed states of gravitons. For GW150914, we estimate the squeezing parameter to be $\sim 10^{-4}$. We find that gravitational waves from binary black holes are well described by a coherent state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_17947 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coherent State Description of Gravitational Waves from Binary Black Holes Kanno, Sugumi Soda, Jiro Taniguchi, Akira General Relativity and Quantum Cosmology Quantum Physics Quantum mechanics is the fundamental framework of nature, and gravitational waves from binary black holes during the inspiral phase should likewise be analyzed quantum mechanically. It is commonly assumed that their classical description corresponds to a coherent state, so any deviation would signal genuinely quantum nature of gravity. We show that the coherent-state description reproduces classical gravitational waves at leading order, while next-order effects generate squeezed states of gravitons. For GW150914, we estimate the squeezing parameter to be $\sim 10^{-4}$. We find that gravitational waves from binary black holes are well described by a coherent state. |
| title | Coherent State Description of Gravitational Waves from Binary Black Holes |
| topic | General Relativity and Quantum Cosmology Quantum Physics |
| url | https://arxiv.org/abs/2508.17947 |