Dark energy models through nonextensive Tsallis’ statistics

Edésio M. Barboza, Rafael da C. Nunes, Everton M.C. Abreu and Jorge Ananias Neto

Physica A: Statistical Mechanics and its Applications, 2015, vol. 436, issue C, 301-310

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. Finally, we have described the dark energy physics through the role of the q-parameter.

Keywords: Tsallis’ thermostatistics; Dark energy; Dark matter; Verlinde’s formalism (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:436:y:2015:i:c:p:301-310

DOI: 10.1016/j.physa.2015.05.002

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