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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.24011 |
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| _version_ | 1866911122460770304 |
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| author | Luu, Hoang Nhan Qiu, Yu-Cheng Tye, S. -H. Henry |
| author_facet | Luu, Hoang Nhan Qiu, Yu-Cheng Tye, S. -H. Henry |
| contents | The Dark Energy Survey (DES) and the Dark Energy Spectroscopic Instrument (DESI) measurements claim that the dark energy equation of state $w \ne -1$. This observation can be explained by the axion Dark Energy (aDE) model of an ultralight axion plus a cosmological constant $Λ$. Despite a relatively large degeneracy, there is a high probability that $Λ<0$. This negative $Λ$ leads the universe to end in a big crunch. Using the best-fit values of the model as a benchmark, we find the lifespan of our universe to be 33 billion years. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_24011 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Lifespan of our Universe Luu, Hoang Nhan Qiu, Yu-Cheng Tye, S. -H. Henry High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics The Dark Energy Survey (DES) and the Dark Energy Spectroscopic Instrument (DESI) measurements claim that the dark energy equation of state $w \ne -1$. This observation can be explained by the axion Dark Energy (aDE) model of an ultralight axion plus a cosmological constant $Λ$. Despite a relatively large degeneracy, there is a high probability that $Λ<0$. This negative $Λ$ leads the universe to end in a big crunch. Using the best-fit values of the model as a benchmark, we find the lifespan of our universe to be 33 billion years. |
| title | The Lifespan of our Universe |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2506.24011 |