DSR-relativistic spacetime picture and the phenomenology of Planck-scale-modified time dilation
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912862319935488 |
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| author | Amelino-Camelia, Giovanni Gubitosi, Giulia Pellecchia, Pietro Refuto, Marco Rosati, Giacomo |
| author_facet | Amelino-Camelia, Giovanni Gubitosi, Giulia Pellecchia, Pietro Refuto, Marco Rosati, Giacomo |
| contents | The most active area of research in quantum-gravity phenomenology investigates the possibility of Planck-scale-modified dispersion relations, focusing mainly on two alternative scenarios: the "LIV" scenario, characterized by a specific mechanism of breakdown of relativistic symmetries, and the "DSR" scenario, which preserves overall relativistic invariance but with deformed laws of relativistic transformation. Two recent studies of modified dispersion relations, one relying on Finsler geometry and one based on heuristic reasoning, raised the possibility of potentially observable effects for time dilation and argued that this might apply also to the LIV and DSR scenarios. We observe that the description of Lorentz transformations in the LIV scenario is such that time dilation cannot be modified. The DSR scenario allows for modifications of time dilation, and establishing their magnitude required us to obtain novel results on the effects of finite DSR boosts in the spacetime sector, with results showing in particular that the modification of time dilation is too small for experimental testing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_08111 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | DSR-relativistic spacetime picture and the phenomenology of Planck-scale-modified time dilation Amelino-Camelia, Giovanni Gubitosi, Giulia Pellecchia, Pietro Refuto, Marco Rosati, Giacomo General Relativity and Quantum Cosmology High Energy Physics - Theory The most active area of research in quantum-gravity phenomenology investigates the possibility of Planck-scale-modified dispersion relations, focusing mainly on two alternative scenarios: the "LIV" scenario, characterized by a specific mechanism of breakdown of relativistic symmetries, and the "DSR" scenario, which preserves overall relativistic invariance but with deformed laws of relativistic transformation. Two recent studies of modified dispersion relations, one relying on Finsler geometry and one based on heuristic reasoning, raised the possibility of potentially observable effects for time dilation and argued that this might apply also to the LIV and DSR scenarios. We observe that the description of Lorentz transformations in the LIV scenario is such that time dilation cannot be modified. The DSR scenario allows for modifications of time dilation, and establishing their magnitude required us to obtain novel results on the effects of finite DSR boosts in the spacetime sector, with results showing in particular that the modification of time dilation is too small for experimental testing. |
| title | DSR-relativistic spacetime picture and the phenomenology of Planck-scale-modified time dilation |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2506.08111 |