Tsallis holographic dark energy

Abstract

Employing the modified entropy-area relation suggested by Tsallis and Cirto\n\\cite{non3}, and the holographic hypothesis, a new holographic dark energy\n(HDE) model is proposed. Considering a flat Friedmann-Robertson-Walker (FRW)\nuniverse in which there is no interaction between the cosmos sectors, the\ncosmic implications of the proposed HDE are investigated. Interestingly enough,\nwe find that the identification of IR-cutoff with the Hubble radius, can lead\nto the late time accelerated Universe even in the absence of interaction\nbetween two dark sectors of the Universe. This is in contrast to the standard\nHDE model with Hubble cutoff, which does not imply the accelerated expansion,\nunless the interaction is taken into account.\n