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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.23905 |
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| _version_ | 1866910042681245696 |
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| author | Wang, Ya-Ru Li, Ze-Wen Rong, Shu-Jun |
| author_facet | Wang, Ya-Ru Li, Ze-Wen Rong, Shu-Jun |
| contents | Gravitational lensing serves as a powerful probe of compact astrophysical objects and dark matter distributions. As relativistic counterparts to photons, neutrinos experiencing lensing offer a complementary means to investigate the properties of curved spacetimes. This paper studies neutrino oscillations within the spacetime geometry described by the Hu-Sawicki f(R) gravity model, focusing on the modifications induced by gravitational lensing. We calculate the oscillation phases for both radial and non-radial neutrino propagation and derive the corresponding flavor transition probabilities for 2-flavor and 3-flavor scenarios under the weak-field approximation. Our analysis demonstrates that the lensing-affected oscillation probabilities exhibit a clear dependence on the Hu-Sawicki model parameter $λ$ , the neutrino mass hierarchy, and the absolute value of the lightest neutrino mass. Furthermore, extending the analysis beyond the weak-field regime reveals that strong-field gravitational lensing amplifies these effects. These results suggest that measurements of lensed neutrino signals could provide a novel avenue for testing modified gravity models and constraining fundamental neutrino parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_23905 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Effects of gravitational lensing on neutrino oscillation in Hu-Sawicki f(R) gravity Wang, Ya-Ru Li, Ze-Wen Rong, Shu-Jun High Energy Physics - Phenomenology General Relativity and Quantum Cosmology Gravitational lensing serves as a powerful probe of compact astrophysical objects and dark matter distributions. As relativistic counterparts to photons, neutrinos experiencing lensing offer a complementary means to investigate the properties of curved spacetimes. This paper studies neutrino oscillations within the spacetime geometry described by the Hu-Sawicki f(R) gravity model, focusing on the modifications induced by gravitational lensing. We calculate the oscillation phases for both radial and non-radial neutrino propagation and derive the corresponding flavor transition probabilities for 2-flavor and 3-flavor scenarios under the weak-field approximation. Our analysis demonstrates that the lensing-affected oscillation probabilities exhibit a clear dependence on the Hu-Sawicki model parameter $λ$ , the neutrino mass hierarchy, and the absolute value of the lightest neutrino mass. Furthermore, extending the analysis beyond the weak-field regime reveals that strong-field gravitational lensing amplifies these effects. These results suggest that measurements of lensed neutrino signals could provide a novel avenue for testing modified gravity models and constraining fundamental neutrino parameters. |
| title | Effects of gravitational lensing on neutrino oscillation in Hu-Sawicki f(R) gravity |
| topic | High Energy Physics - Phenomenology General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2506.23905 |