Is Dark Energy Dynamical in the DESI Era? A Critical Review
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909975219011584 |
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| author | Capozziello, Salvatore Chaudhary, Himanshu Harko, Tiberiu Mustafa, Ghulam |
| author_facet | Capozziello, Salvatore Chaudhary, Himanshu Harko, Tiberiu Mustafa, Ghulam |
| contents | We investigate whether the recent DESI DR2 measurements provide or not evidences for dynamical dark energy by exploring the $ω_0ω_a$CDM model and its extensions with free $\sum m_ν$ and $N_{\mathrm{eff}}$. Using a comprehensive MCMC analysis with a wide range of cosmological datasets including DESI~DR2 BAO and Ly$α$ data, CMB compressed likelihoods, BBN, cosmic chronometers, and multiple Type~Ia supernova compilations, we assess the statistical preference for departures from $Λ$CDM. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10585 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Is Dark Energy Dynamical in the DESI Era? A Critical Review Capozziello, Salvatore Chaudhary, Himanshu Harko, Tiberiu Mustafa, Ghulam Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory We investigate whether the recent DESI DR2 measurements provide or not evidences for dynamical dark energy by exploring the $ω_0ω_a$CDM model and its extensions with free $\sum m_ν$ and $N_{\mathrm{eff}}$. Using a comprehensive MCMC analysis with a wide range of cosmological datasets including DESI~DR2 BAO and Ly$α$ data, CMB compressed likelihoods, BBN, cosmic chronometers, and multiple Type~Ia supernova compilations, we assess the statistical preference for departures from $Λ$CDM. |
| title | Is Dark Energy Dynamical in the DESI Era? A Critical Review |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2512.10585 |