Fitting the DESI BAO Data with Dark Energy Driven by the Cohen-Kaplan-Nelson Bound
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866911998762024960 |
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| author | Adolf, Patrick Hirsch, Martin Krieg, Sara Päs, Heinrich Tabet, Mustafa |
| author_facet | Adolf, Patrick Hirsch, Martin Krieg, Sara Päs, Heinrich Tabet, Mustafa |
| contents | Gravity constrains the range of validity of quantum field theory. As has been pointed out by Cohen, Kaplan, and Nelson (CKN), such effects lead to interdependent ultraviolet (UV) and infrared (IR) cutoffs that may stabilize the dark energy of the universe against quantum corrections, if the IR cutoff is set by the Hubble horizon. As a consequence of the cosmic expansion, this argument implies a time-dependent dark energy density. In this paper we confront this idea with recent data from DESI BAO, Hubble and supernova measurements. We find that the CKN model provides a better fit to the data than the $Λ$CDM model and can compete with other models of time-dependent dark energy that have been studied so far. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_09964 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fitting the DESI BAO Data with Dark Energy Driven by the Cohen-Kaplan-Nelson Bound Adolf, Patrick Hirsch, Martin Krieg, Sara Päs, Heinrich Tabet, Mustafa Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory Gravity constrains the range of validity of quantum field theory. As has been pointed out by Cohen, Kaplan, and Nelson (CKN), such effects lead to interdependent ultraviolet (UV) and infrared (IR) cutoffs that may stabilize the dark energy of the universe against quantum corrections, if the IR cutoff is set by the Hubble horizon. As a consequence of the cosmic expansion, this argument implies a time-dependent dark energy density. In this paper we confront this idea with recent data from DESI BAO, Hubble and supernova measurements. We find that the CKN model provides a better fit to the data than the $Λ$CDM model and can compete with other models of time-dependent dark energy that have been studied so far. |
| title | Fitting the DESI BAO Data with Dark Energy Driven by the Cohen-Kaplan-Nelson Bound |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2406.09964 |