Time problem in primordial perturbations
| Autor: | Boldrin, Alice, Małkiewicz, Przemysław, Peter, Patrick |
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| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Phys.Rev.D 109 (2024) 10, 106005 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.109.106005 |
| Popis: | 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. Comment: Corrected typos |
| Databáze: | arXiv |
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