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August 23, 2016Journal of Cosmology and Astroparticle Physics123 citationsOpen Access

Probing the cosmological viability of non-gaussian statistics

RNRafael C. NunesEBEdésio M. BarbozaÉAÉverton M. C. Abreu

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Abstract

Based on the relationship between thermodynamics and gravity we propose, with the aid of Verlinde's formalism, an alternative interpretation of the dynamical evolution of the Friedmann-Robertson-Walker Universe. This description takes into account the entropy and temperature intrinsic to the horizon of the universe due to the information holographically stored there through non-gaussian statistical theories proposed by Tsallis and Kaniadakis. The effect of these non-gaussian statistics in the cosmological context is change the strength of the gravitational constant. In this paper, we consider the wCDM model modified by the non-gaussian statistics and investigate the compatibility of these non-gaussian modification with the cosmological observations. In order to analyze in which extend the cosmological data constrain these non-extensive statistics, we use type Ia supernovae, baryon acoustic oscillations, Hubble expansion rate function and the linear growth of matter density perturbations data.

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Nunes et al. (2016) studied this question.

synapsesocial.com/papers/6a1aac0349c6765e3885c7b1https://doi.org/10.1088/1475-7516/2016/08/051
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