Updated cosmological constraints on axion dark energy with DESI
Year: 2025
Type: article
Abstract: We present updated constraints on the parameters of an axion dark energy model, for which we took into account the properties of its characteristic potential and its full cosmological evolution. We show that the values of the axion parameters appear sufficiently constrained by the data, including the latest DESI DR1, and are consistent with the theoretical expectations of a field mass ${m}_{a}$ in the ultralight regime $\mathrm{log}({m}_{a}{c}^{2}/\mathrm{eV})\ensuremath{\simeq}\ensuremath{-}32.60\ifmmode\pm\else\textpm\fi{}0.12$, and an effective energy scale ${f}_{a}$ close to the reduced Planck energy $\mathrm{log}({f}_{a}/{M}_{\mathrm{Pl}})\ensuremath{\simeq}\ensuremath{-}0.28\ifmmode\pm\else\textpm\fi{}0.19$. Our results also support the idea of dynamical dark energy, although Bayesian evidence still favors the phenomenological dark energy model ${w}_{0}{w}_{a}$ over the axion dark energy, with the Bayes factor indicating moderate and weak strength of the evidence, respectively, when the models are compared to the cosmological constant $\mathrm{\ensuremath{\Lambda}}$. However, the results suggest that axion dark energy remains a well-motivated model and its parameters may be better constrained if the upcoming DESI data show further evidence for dynamical dark energy.
DOI: 10.1103/6pqs-xjln
Authors: L. A. Ureña-López, F. Lozano-Rodríguez, J. O. Román-Herrera, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, T. Claybaugh, A. de la Macorra, Arjun Dey, S. Ferraro, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A. Gontcho, G. Gutierrez, K. Honscheid, C. Howlett, M. Ishak, R. Kehoe, D. Kirkby, T. Kisner, A. Lambert, M. Landriau, L. Le Guillou, M. Manera, A. Meisner, R. Miquel, J. Moustakas, F. Prada, I. Pérez-Ràfols, G. Rossi, E. Sanchez, M. Schubnell, J. Silber, D. Sprayberry, G. Tarlé, B. A. Weaver, H. Zou
Institutions: Universidad de Guanajuato, Lawrence Berkeley National Laboratory, Boston University, University of Milan, Brera Astronomical Observatory, National Institute for Astrophysics, University College London, Universidad Nacional Autónoma de México, NSF NOIRLab, University of California, Berkeley, Universidad de Los Andes, Institute of Space Sciences, Institut d'Estudis Espacials de Catalunya, University of Portsmouth, Fermi National Accelerator Laboratory, The Ohio State University, The University of Queensland, The University of Texas at Dallas, Southern Methodist University, University of California, Irvine, Sorbonne Université, Laboratoire de Physique Nucléaire et de Hautes Énergies, Universitat Autònoma de Barcelona, Institute for High Energy Physics, Barcelona Institute of Science and Technology, Institució Catalana de Recerca i Estudis Avançats, Siena College, Consejo Superior de Investigaciones Científicas, Instituto de Astrofísica de Andalucía, Universitat Politècnica de Catalunya, Sejong University, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, University of Michigan, Chinese Academy of Sciences, National Astronomical Observatories
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, Gordon and Betty Moore Foundation, Heising-Simons Foundation, Ministerio de Ciencia, Innovación y Universidades, National Energy Research Scientific Computing Center, Consejo Nacional de Ciencia y Tecnología, Mahidol University, Universidad de Guanajuato, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Office of Science, Science and Technology Facilities Council, Agencia Estatal de Investigación, Division of Astronomical Sciences, Ministerio de Universidades
Awards: G1044631029, G1105844351, G1175115578, G1286236842, G1813527838, A RESEARCH PROGRAM IN ELEMENTARY PARTICLE PHYSICS, G1863003419, PROPOSAL TO EXPLORE THE FUNDAMENTAL CONSTITUENTS OF THE UNIVERSE FUNDING YEARS FY 2018-2020, G2262748287, G294895050, G300979063, G3083819904, G3452655474, G3480869486, G419881185, G425668148, G42916606, G4501827968, G4844356218, G491712853, G498139845, G5080475149, G5635532810, G593054264, G6225255695, G6432260401, G6652958823, IMPLEMENTING, INTEGRATING AND APPLYING CODES AND METHODS FOR DARK ENERGY PARAMETER CONSTRAINT ANALYSIS INCLUDING INTRINSIC ALIGNMENT SYSTEMATIC MITIGATION FOR DARK ENERGY SURVEYS, G6876926712, G7084143925, Management and Operations of the National Optical Astronomy Observatory, G7395345766, G7805626310, G7863371703, G8345352404, G8497050386, G8667377315, G969889393
OpenAlex ID: W4415899192