Friedmann cosmology with fluids and hyperfluids
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866908936257404928 |
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| author | Andrei, Ilaria Iosifidis, Damianos Järv, Laur Saal, Margus |
| author_facet | Andrei, Ilaria Iosifidis, Damianos Järv, Laur Saal, Margus |
| contents | We discuss flat Friedmann-Lemaitre-Robertson-Walker (FLRW) metric-affine cosmology where the metric and connection as well as the matter energy-momentum and hypermomentum all obey the symmetry of spatial homogeneity and isotropy. In particular, we outline a scenario where a dark dust fluid carries spin hypermomentum which makes its effective equation of state dynamical and might relate to the DESI DR2 data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_03343 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Friedmann cosmology with fluids and hyperfluids Andrei, Ilaria Iosifidis, Damianos Järv, Laur Saal, Margus General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics We discuss flat Friedmann-Lemaitre-Robertson-Walker (FLRW) metric-affine cosmology where the metric and connection as well as the matter energy-momentum and hypermomentum all obey the symmetry of spatial homogeneity and isotropy. In particular, we outline a scenario where a dark dust fluid carries spin hypermomentum which makes its effective equation of state dynamical and might relate to the DESI DR2 data. |
| title | Friedmann cosmology with fluids and hyperfluids |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2604.03343 |