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- In the present work, we investigate the power-law entropy corrected holographic dark energy (PLECHDE) model with Hubble horizon cutoff. We use 46 observational Hubble data points in the redshift range 0 ≤ 𝑧 ≤ 2.36 to determine the present Hubble constant 𝐻0 and the model parameter 𝑛. It represents a phase transition of the universe from deceleration to acceleration and has the transition point at 𝑧𝑡 = 0.71165. We investigate the observational constraints on the model and calculate some relevant cosmological parameters. We examine the model’s validity by drawing state-finder parameters that yield the result compatible with the modern observational data. The model’s physical and geometrical characteristics are also explored, and they are shown to match well with current observations of observational Hubble data (OHD) and the latest joint light curves(JLA) datasets.
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- 2022| World Scientific Pub...In this paper, we have generalized the behaviors of transit cosmological model under the observational data with Barrow holographic dark energy. We consider the scale factor f ield as φ = φ0(tβeαt)m to get exact solutions for the field equations in a non-flat FRW universe in Brans–Dicke theory. The values of the model parameters α and β are obtained by best fitting of 46 observational Hubble data (OHD) points in the range 0 ≤ z ≤ 2.36. The derived model exhibits a transition scenario for open, flat and closed universe. The EoS parameter shows a quintom-like behavior, lies both quintessence (ω>−1) and phantom (ω<−1) regions and crosses the phantom divide. The matter and dark energy density parameters (ρD, ρm), scalar field φ and other cosmological parameters provide the results consistent with the recent observational datasets. Some other physical and geometrical behaviors of BHDE are also described and the satisfactory behaviors are found with current observations (OHD+JLA).
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