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arXiv · 2512.12697

A parameterized equation of state for dark energy and Hubble Tension

Jing-Ya Zhao·Tong-Yu He·Jia-Jun Yin·Zhan-Wen Han·Rong-Jia Yang
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Abstract

We propose a parameterized equation of state for dark energy and perform observational tests with the Hubble parameter measurements, the Pantheon supernova sample, and DESI DR2 data. We obtain the best-fit values for the parameters as: $H_0 = 73.28\pm 0.15~\mathrm{km\,s^{-1}\, Mpc^{-1}}$, $\Omega_{\rm m} = 0.316\pm 0.011$, and $\alpha = 0.00032\pm 0.00046$, demonstrating that the model exhibits a high degree of consistency with astronomical observations and provides a promising parameterized method for addressing the Hubble tension.

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Jing-Ya Zhao, Tong-Yu He, Jia-Jun Yin, Zhan-Wen Han, Rong-Jia Yang. 2025-12-14. A parameterized equation of state for dark energy and Hubble Tension. https://doi.org/10.1016/j.newast.2026.102640

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