Pedrotti, D. orcid.org/0009-0007-9065-2465, Jiang, J.-Q. orcid.org/0000-0003-0957-3633, Escamilla, L.A. orcid.org/0000-0003-4334-5140 et al. (2 more authors) (2025) Multidimensionality of the Hubble tension: the roles of Ωm and ωc. Physical Review D, 111 (2). 023506. ISSN 2470-0010
Abstract
The Hubble tension is inherently multidimensional and bears important implications for parameters beyond H0. We discuss the key role of the matter density parameter ωm and the physical cold dark matter density ωc. We argue that once ωm and the physical baryon density ωb are calibrated, through baryon acoustic oscillations (BAO) and/or type Ia supernovae (SNeIa) for ωm, and via big bang nucleosynthesis for ωb, any model raising H0 requires raising ωc and, under minimal assumptions, also the clustering parameter S8. We explicitly verify that this behavior holds when analyzing recent BAO and SNeIa data. We argue that a calibration of ωm as reliable and model-independent as possible should be a priority in the Hubble tension discussion, and an interesting possibility in this sense could be represented by galaxy cluster gas mass fraction measurements.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2025 The Authors. Except as otherwise noted, this author-accepted version of a journal article published in Physical Review D is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Baryon acoustic oscillations; Cosmological parameters; Dark matter |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 06 Mar 2025 15:46 |
Last Modified: | 06 Mar 2025 15:54 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Refereed: | Yes |
Identification Number: | 10.1103/physrevd.111.023506 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:224151 |