Kaniadakis holographic dark energy and cosmology
Drepanou N. Lymperis A. Saridakis E.N. Yesmakhanova K.
May 2022Springer Science and Business Media Deutschland GmbH
European Physical Journal C
2022#82Issue 5
We construct a holographic dark energy scenario based on Kaniadakis entropy, which is a generalization of Boltzmann-Gibbs entropy that arises from relativistic statistical theory and is characterized by a single parameter K which quantifies the deviations from standard expressions, and we use the future event horizon as the Infrared cutoff. We extract the differential equation that determines the evolution of the effective dark energy density parameter, and we provide analytical expressions for the corresponding equation-of-state and deceleration parameters. We show that the universe exhibits the standard thermal history, with the sequence of matter and dark-energy eras, while the transition to acceleration takes place at z≈ 0.6. Concerning the dark-energy equation-of-state parameter we show that it can have a rich behavior, being quintessence-like, phantom-like, or experience the phantom-divide crossing in the past or in the future. Finally, in the far future dark energy dominates completely, and the asymptotic value of its equation of state depends on the values of the two model parameters.
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Department of Physics, National Technical University of Athens, Zografou Campus, Athens, 157 73, Greece
Department of Physics, University of Patras, Patras, 26500, Greece
National Observatory of Athens, Lofos Nymfon, Athens, 11852, Greece
CAS Key Laboratory for Researches in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Anhui, Hefei, 230026, China
Eurasian National University, Nur-Sultan Astana, 010008, Kazakhstan
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Nur-Sultan, 010009, Kazakhstan
Department of Physics
Department of Physics
National Observatory of Athens
CAS Key Laboratory for Researches in Galaxies and Cosmology
Eurasian National University
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics
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