| Issue |
EPL
Volume 151, Number 1, July 2025
|
|
|---|---|---|
| Article Number | 19001 | |
| Number of page(s) | 5 | |
| Section | Gravitation, cosmology and astrophysics | |
| DOI | https://doi.org/10.1209/0295-5075/ade738 | |
| Published online | 22 July 2025 | |
Comparison of Rh = ct and ΛCDM using DESI DR1 measurements
Department of Physics, Indian Institute of Technology - Hyderabad, Telangana-502284, India
Received: 13 April 2025
Accepted: 23 June 2025
We use DESI DR1 BAO measurements of the ratio of tranvserse comoving distance to Hubble distance in order to test the compatibility of 
over flat ΛCDM. For this purpose, we used Bayesian model selection to evaluate the efficacy of these models given the observed data. When we consider the BAO measurements up to redshift of 1.3, both models are equally favored. However, when we consider the Lyman-α QSO measurement at redshift of 2.33, we find Bayes factors greater than 100 for flat ΛCDM over using two different priors for Ωm, indicating that ΛCDM is decisively favored over . The same is the case when we combine all the measurements. Therefore, the DESI DRI measurements rule out cosmology, albeit this is driven by the Lyman-α QSO measurement at z = 2.33.
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