Dynamical dark energy in light of cosmic distance measurements II: a study using current observations
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913358194671616 |
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| author | Wang, Xiaoma Gu, Gan Mu, Xiaoyong Yuan, Shuo Zhao, Gong-Bo |
| author_facet | Wang, Xiaoma Gu, Gan Mu, Xiaoyong Yuan, Shuo Zhao, Gong-Bo |
| contents | We extract key information of dark energy from current observations of BAO, OHD and $H_0$, and find hints of dynamical behaviour of dark energy. In particular, a dynamical dark energy model whose equation of state crosses $-1$ is favoured by observations. We also find that the Universe has started accelerating at a lower redshift than expected. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_06310 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dynamical dark energy in light of cosmic distance measurements II: a study using current observations Wang, Xiaoma Gu, Gan Mu, Xiaoyong Yuan, Shuo Zhao, Gong-Bo Cosmology and Nongalactic Astrophysics We extract key information of dark energy from current observations of BAO, OHD and $H_0$, and find hints of dynamical behaviour of dark energy. In particular, a dynamical dark energy model whose equation of state crosses $-1$ is favoured by observations. We also find that the Universe has started accelerating at a lower redshift than expected. |
| title | Dynamical dark energy in light of cosmic distance measurements II: a study using current observations |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2404.06310 |