Time problem in primordial perturbations
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866911869248208896 |
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| author | Boldrin, Alice Małkiewicz, Przemysław Peter, Patrick |
| author_facet | Boldrin, Alice Małkiewicz, Przemysław Peter, Patrick |
| contents | We study the non-unitary relation between quantum gravitational models defined using different internal times. We show that despite the non-unitarity, it is possible to provide a prescription for making unambiguous, though restricted, physical predictions independent of specific clocks. To illustrate this result, we employ a model of quantum gravitational waves in a quantum Friedmann universe. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_06887 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Time problem in primordial perturbations Boldrin, Alice Małkiewicz, Przemysław Peter, Patrick General Relativity and Quantum Cosmology We study the non-unitary relation between quantum gravitational models defined using different internal times. We show that despite the non-unitarity, it is possible to provide a prescription for making unambiguous, though restricted, physical predictions independent of specific clocks. To illustrate this result, we employ a model of quantum gravitational waves in a quantum Friedmann universe. |
| title | Time problem in primordial perturbations |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2401.06887 |