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- Title
New Tsallis holographic dark energy with future event horizon as IR-cutoff in non-flat Universe.
- Authors
Nisha, Muttathazhathu Ali; Pankaj; Sharma, Umesh Kumar; Kumar, P. Suresh; Mishra, Ambuj Kumar
- Abstract
In this work, new Tsallis holographic dark energy (NTHDE) with future event horizon as IR-cutoff is constructed in a non-flat Friedmann–Lemaitre–Robertson–Walker Universe. The accelerating expansion phase of the universe is described by using deceleration parameter, equation of state parameter and density parameter by using different values of NTHDE parameter " δ " and " c ". We specifically derive the differential equations for the dark-energy density parameter (DP) and hence the equation of state parameter (EoS) by taking into account closed and open spatial geometry. In both a closed and an open universe, the equation of state parameter exhibits pure quintessence behavior for c > 1 , quintom behavior for c < 1 , and Λ CDM model recovery for c = 1. We can see the phase changes from deceleration to acceleration at z ≈ 0. 6 by tracking the evolution of the deceleration parameter. As inferred from the evolution of the Hubble parameter, NTHDE in a non-flat universe precisely matches Hubble data. Stability of our model by analyzing the squared speed of sound is investigated as well.
- Subjects
DARK energy; ENERGY futures; UNIVERSE; HUBBLE constant; SPEED of sound; EQUATIONS of state; DIFFERENTIAL equations; COSMIC background radiation
- Publication
Modern Physics Letters A, 2022, Vol 37, Issue 28, p1
- ISSN
0217-7323
- Publication type
Article
- DOI
10.1142/S0217732322501899