Modified cosmology models from thermodynamical approach
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 particu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-019-7476-y |
| _version_ | 1818964339168641024 |
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| author | Chao-Qiang Geng Yan-Ting Hsu Jhih-Rong Lu Lu Yin |
| author_facet | Chao-Qiang Geng Yan-Ting Hsu Jhih-Rong Lu Lu Yin |
| author_sort | Chao-Qiang Geng |
| collection | DOAJ |
| description | 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 $$\Lambda $$ Λ CDM one. |
| first_indexed | 2024-12-20T12:59:32Z |
| format | Article |
| id | doaj.art-904890a0624c476f8f6488b50113c6b1 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-20T12:59:32Z |
| publishDate | 2020-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-904890a0624c476f8f6488b50113c6b12022-12-21T19:39:57ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-01-018011810.1140/epjc/s10052-019-7476-yModified cosmology models from thermodynamical approachChao-Qiang Geng0Yan-Ting Hsu1Jhih-Rong Lu2Lu Yin3School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCASDepartment of Physics, National Tsing Hua UniversityDepartment of Physics, National Tsing Hua UniversityDepartment of Physics, National Tsing Hua UniversityAbstract 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 $$\Lambda $$ Λ CDM one.https://doi.org/10.1140/epjc/s10052-019-7476-y |
| spellingShingle | Chao-Qiang Geng Yan-Ting Hsu Jhih-Rong Lu Lu Yin Modified cosmology models from thermodynamical approach European Physical Journal C: Particles and Fields |
| title | Modified cosmology models from thermodynamical approach |
| title_full | Modified cosmology models from thermodynamical approach |
| title_fullStr | Modified cosmology models from thermodynamical approach |
| title_full_unstemmed | Modified cosmology models from thermodynamical approach |
| title_short | Modified cosmology models from thermodynamical approach |
| title_sort | modified cosmology models from thermodynamical approach |
| url | https://doi.org/10.1140/epjc/s10052-019-7476-y |
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