From loop quantum gravity to cosmology: the two-vertex model
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914834153472000 |
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| author | Cendal, Álvaro Garay, Iñaki Garay, Luis J. |
| author_facet | Cendal, Álvaro Garay, Iñaki Garay, Luis J. |
| contents | We study the notion of volume and its dynamics in the loop-quantum-gravity truncation known as the two-vertex model. We also show that its U(N)-symmetry reduction provides the old effective dynamics of loop quantum cosmology with an arbitrary perfect barotropic fluid content. A suitable modification of the Poisson bracket structure of the U(N)-symmetric model leads to the loop quantum gravity improved dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_15320 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | From loop quantum gravity to cosmology: the two-vertex model Cendal, Álvaro Garay, Iñaki Garay, Luis J. General Relativity and Quantum Cosmology We study the notion of volume and its dynamics in the loop-quantum-gravity truncation known as the two-vertex model. We also show that its U(N)-symmetry reduction provides the old effective dynamics of loop quantum cosmology with an arbitrary perfect barotropic fluid content. A suitable modification of the Poisson bracket structure of the U(N)-symmetric model leads to the loop quantum gravity improved dynamics. |
| title | From loop quantum gravity to cosmology: the two-vertex model |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2403.15320 |