Dynamical Dark Energy, Dual Spacetime, and DESI
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866913760814301184 |
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| author | Hur, Sunhaeng Jejjala, Vishnu Kavic, Michael J. Minic, Djordje Takeuchi, Tatsu |
| author_facet | Hur, Sunhaeng Jejjala, Vishnu Kavic, Michael J. Minic, Djordje Takeuchi, Tatsu |
| contents | In this paper we discuss possible consequences of a manifestly non-commutative and $T$-duality covariant formulation of string theory on dark energy, when the correspondence between short distance (UV) and long distance (IR) physics is taken into account. We demonstrate that the dark energy is dynamical, \textit{i.e.}, time-dependent, and we compute the allowed values of $w_0$ and $w_a$, given by $w(a) = w_0+w_a(1-a)$, which compare favorably to the most recent observations by DESI. From this point of view, the latest results from DESI might point to a fundamentally new understanding of quantum spacetime in the context of quantum gravity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_20854 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dynamical Dark Energy, Dual Spacetime, and DESI Hur, Sunhaeng Jejjala, Vishnu Kavic, Michael J. Minic, Djordje Takeuchi, Tatsu High Energy Physics - Theory Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology In this paper we discuss possible consequences of a manifestly non-commutative and $T$-duality covariant formulation of string theory on dark energy, when the correspondence between short distance (UV) and long distance (IR) physics is taken into account. We demonstrate that the dark energy is dynamical, \textit{i.e.}, time-dependent, and we compute the allowed values of $w_0$ and $w_a$, given by $w(a) = w_0+w_a(1-a)$, which compare favorably to the most recent observations by DESI. From this point of view, the latest results from DESI might point to a fundamentally new understanding of quantum spacetime in the context of quantum gravity. |
| title | Dynamical Dark Energy, Dual Spacetime, and DESI |
| topic | High Energy Physics - Theory Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2503.20854 |