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It might be necessary to access the impact of recent released Dark Energy Spectroscopic Instrument (DESI) data on the state equation of dark energy in the Hubble-tension-free cosmologies. In this paper, we report the MCMC analysis for the w₀wₐCDM model with pre-recombination early dark energy (EDE) using Planck+DESI+Pantheon+SH0ES dataset. The results reveal that H₀=72. 43 0. 75, w₀=-0. 9710. 035, wₐ=-0. 3470. 120 for axion-like EDE, while H₀=73. 32 0. 64, w₀=-0. 9230. 054, wₐ=-0. 4350. 132 for AdS-EDE, and also not surprisingly the spectral index of primordial scalar perturbation moves towards nₛ=1. It looks like that in corresponding models the bestfit H₀ are higher than those with pre-DESI BAO data, but without the further exacerbation of S₈ tension.
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Wang et al. (Mon,) studied this question.
www.synapsesocial.com/papers/68e6d04db6db64358764daaa — DOI: https://doi.org/10.48550/arxiv.2404.18579
Hao Wang
Yun-Song Piao
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