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arXiv · 1911.06046

Modified Cosmology Models from Thermodynamical Approach

Chao-Qiang Geng·Yan-Ting Hsu·Jhih-Rong Lu·Lu Yin
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Abstract

We apply the first law of thermodynamics to the apparent horizon of the universe with the power-law corrected and non-extensive Tsallis entropies rather than the Bekenstein-Hawking one. We examine the cosmological properties in the two entropy models by using the CosmoMC package. In particular, the first numerical study for the cosmological observables with the power-law corrected entropy is performed. We also show that the neutrino mass sum has a non-zero central value with a relaxed upper bound in the Tsallis entropy model comparing with that in the $\Lambda$CDM one.

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Chao-Qiang Geng, Yan-Ting Hsu, Jhih-Rong Lu, Lu Yin. 2019-11-14. Modified Cosmology Models from Thermodynamical Approach. https://doi.org/10.1140/epjc%2Fs10052-019-7476-y

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