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Updated cosmological constraints on axion dark energy with DESI

Fuente: arXiv

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Auteurs principaux:	Ureña-López, L. A., Lozano-Rodríguez, F., Román-Herrera, J. O., Aguilar, J., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., de la Macorra, A., Dey, Arjun, Ferraro, S., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. Gontcho A, Gutierrez, G., Honscheid, K., Howlett, C., Ishak, M., Kehoe, R., Kirkby, D., Kisner, T., Lambert, A., Landriau, M., Guillou, L. Le, Manera, M., Meisner, A., Miquel, R., Moustakas, J., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schubnell, M., Silber, J., Sprayberry, D., Tarlé, G., Weaver, B. A., Zou, H.
Format:	Preprint
Publié:	2025
Sujets:	Cosmology and Nongalactic Astrophysics
Accès en ligne:	Acceder al recurso
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author	Ureña-López, L. A. Lozano-Rodríguez, F. Román-Herrera, J. O. Aguilar, J. Ahlen, S. Bianchi, D. Brooks, D. Claybaugh, T. de la Macorra, A. Dey, Arjun Ferraro, S. Forero-Romero, J. E. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Honscheid, K. Howlett, C. Ishak, M. Kehoe, R. Kirkby, D. Kisner, T. Lambert, A. Landriau, M. Guillou, L. Le Manera, M. Meisner, A. Miquel, R. Moustakas, J. Prada, F. Pérez-Ràfols, I. Rossi, G. Sanchez, E. Schubnell, M. Silber, J. Sprayberry, D. Tarlé, G. Weaver, B. A. Zou, H.
author_facet	Ureña-López, L. A. Lozano-Rodríguez, F. Román-Herrera, J. O. Aguilar, J. Ahlen, S. Bianchi, D. Brooks, D. Claybaugh, T. de la Macorra, A. Dey, Arjun Ferraro, S. Forero-Romero, J. E. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Honscheid, K. Howlett, C. Ishak, M. Kehoe, R. Kirkby, D. Kisner, T. Lambert, A. Landriau, M. Guillou, L. Le Manera, M. Meisner, A. Miquel, R. Moustakas, J. Prada, F. Pérez-Ràfols, I. Rossi, G. Sanchez, E. Schubnell, M. Silber, J. Sprayberry, D. Tarlé, G. Weaver, B. A. Zou, H.
contents	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 $\log (m_a c^2/~\mathrm{eV}) \simeq -32.60~\pm~0.12$, and an effective energy scale $f_a$ close to the reduced Planck energy $\log (f_a/~ M_\mathrm{Pl}) \simeq -0.28~\pm~0.19$. Our results also support the idea of dynamical dark energy, although Bayesian evidence still favors the phenomenological dark energy model $w_0w_a$ 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 $Λ$. 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.
format	Preprint
id	arxiv_https___arxiv_org_abs_2503_20178
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Updated cosmological constraints on axion dark energy with DESI Ureña-López, L. A. Lozano-Rodríguez, F. Román-Herrera, J. O. Aguilar, J. Ahlen, S. Bianchi, D. Brooks, D. Claybaugh, T. de la Macorra, A. Dey, Arjun Ferraro, S. Forero-Romero, J. E. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Honscheid, K. Howlett, C. Ishak, M. Kehoe, R. Kirkby, D. Kisner, T. Lambert, A. Landriau, M. Guillou, L. Le Manera, M. Meisner, A. Miquel, R. Moustakas, J. Prada, F. Pérez-Ràfols, I. Rossi, G. Sanchez, E. Schubnell, M. Silber, J. Sprayberry, D. Tarlé, G. Weaver, B. A. Zou, H. Cosmology and Nongalactic Astrophysics 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 $\log (m_a c^2/~\mathrm{eV}) \simeq -32.60~\pm~0.12$, and an effective energy scale $f_a$ close to the reduced Planck energy $\log (f_a/~ M_\mathrm{Pl}) \simeq -0.28~\pm~0.19$. Our results also support the idea of dynamical dark energy, although Bayesian evidence still favors the phenomenological dark energy model $w_0w_a$ 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 $Λ$. 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.
title	Updated cosmological constraints on axion dark energy with DESI
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2503.20178