Regular Article - Theoretical Physics
New Tsallis holographic dark energy
Department of Mathematics, Institute of Applied Sciences and Humanities, GLA University Mathura, 281406, Mathura, Uttar Pradesh, India
2 IT Department (Math Section), University of Technology and Applied Sciences-Salalah, Salalah, Oman
3 IT Department (Math Section), University of Technology and Applied Sciences-HCT, Muscat, Oman
Accepted: 28 February 2022
Published online: 18 March 2022
Tsallis entropy is a generalization of the Boltzmann–Gibbs entropy in statistical theory which uses a parameter to measure the deviation from the standard scenario quantitatively. Using concepts of Tsallis entropy and future event horizon, we construct a new Tsallis holographic dark energy model. The parameters c and will be used to characterize various aspects of the model. Analytical expressions for various cosmological parameters such as the differential equation describing the evolution of the effective dark energy density parameter, the equation of state parameter and the deceleration parameter are obtained. The equation of state parameter for the current model exhibits the pure quintessence behaviour for , quintom behaviour for whereas the CDM model is recovered for . To analyze the thermal history of the universe, we obtained the expression for the deceleration parameter and found that for , the phase transits from deceleration to acceleration.
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