Dark energy models through nonextensive Tsallis’ statistics

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Oct 2015Embargo end date: 01 Jan 2014 English Publisher:Elsevier BVJournal:Physica A: Statistical Mechanics and its Applications, volume 436, pages 301-310 (issn: 0378-4371,

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Authors: Barboza, Edésio M.; Nunes, Rafael da C.; Abreu, Everton M. C.; Ananias Neto, Jorge;

doi: 10.1016/j.physa.2015.05.002 , 10.48550/arxiv.1403.5706

arXiv: 1403.5706

Dark energy models through nonextensive Tsallis’ statistics

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Abstract

The accelerated expansion of the Universe is one of the greatest challenges of modern physics. One candidate to explain this phenomenon is a new field called dark energy. In this work we have used the Tsallis nonextensive statistical formulation of the Friedmann equation to explore the Barboza-Alcaniz and Chevalier-Polarski-Linder parametric dark energy models and the Wang-Meng and Dalal vacuum decay models. After that, we have discussed the observational tests and the constraints concerning the Tsallis nonextensive parameter.

7 pages, two-column format

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Keywords

Statistical thermodynamics, Tsallis' thermostatistics, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), dark energy, Verlinde's formalism, dark matter, General Relativity and Quantum Cosmology, Relativistic cosmology

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