Tsallis holographic dark energy
M. TavayefPhysics Department and Biruni Observatory, College of Sciences, Shiraz University, Shiraz 71454, IranAhmad SheykhiResearch Institute for Astronomy and Astrophysics of Maragha (RIAAM), P.O. Box 55134-441, Maragha, IranKazuharu BambaDivision of Human Support System, Faculty of Symbiotic Systems Science, Fukushima University, Fukushima 960-1296, JapanH. MoradpourResearch Institute for Astronomy and Astrophysics of Maragha (RIAAM), P.O. Box 55134-441, Maragha, Iran
2018en
ABI
Abstract
Employing the modified entropy-area relation suggested by Tsallis and Cirto \cite{non3}, and the holographic hypothesis, a new holographic dark energy (HDE) model is proposed. Considering a flat Friedmann-Robertson-Walker (FRW) universe in which there is no interaction between the cosmos sectors, the cosmic implications of the proposed HDE are investigated. Interestingly enough, we find that the identification of IR-cutoff with the Hubble radius, can lead to the late time accelerated Universe even in the absence of interaction between two dark sectors of the Universe. This is in contrast to the standard HDE model with Hubble cutoff, which does not imply the accelerated expansion, unless the interaction is taken into account.
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Cited by 20 references