Reconstruction of cosmic history from a simple parametrization of H

Abstract

In this paper, we propose a simple parametrization of the Hubble parameter H in order to explain the late time cosmic acceleration. We show that our proposal covers many models obtained in different schemes of parametrization under one umbrella. We demonstrate that a simple modification in the functional form of Hubble parameter can give rise to interesting cosmological phenomena such as big rip singularity, bounce and others. We have also constrained the model parameters using the latest 28 points of H(z) data for three cases which admit transition from deceleration to acceleration.

24 pages, 5 figures

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• Accelerating Universe in Hybrid and Logarithmic Teleparallel Gravity
• LRS Bianchi type-I cosmological model with constant deceleration parameter in $f(R,T)$ gravity
• Constraints on the Parameterized Deceleration Parameter in FLRW Universe
• A New $Om(z)$ Diagnostic of Dark Energy in General Relativity Theory
• An Accelerating Cosmological Model from a Parametrization of Hubble Parameter
• Thermodynamics of the viscous $f(T,B)$ gravity in the new agegraphic dark energy model
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