A New Guest in the Third Quantized Multiverse
| Autor: | Bellido, Samuel Barroso, Wagner, Fabian |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Phys. Rev. D 105, 106001 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.105.106001 |
| Popis: | In the present article we point out a conceptual issue of the Third Quantization formalism for Canonical Quantum Gravity. Based on earlier results on interuniversal entanglement, the picture of noninteracting universe-antiuniverse pairs is incomplete. In particular, the variation of the entanglement entropy with the scale factor, understood as a measure of time, implies either an interaction between pairs of universes or universes with a heat bath, i.e. an external field. We propose a simple solution to the problem by adding a new quantum field to the formalism. Correspondingly, particles of this field mediate interactions between universes -- depending on the model at tree level or one loop -- and may further provide a heat bath in the background. Comment: 4 pages, 2 figures. To be published |
| Databáze: | arXiv |
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