Bianchi-V string cosmological model with dark energy anisotropy

Mishra, B.; Tripathy, S. K.; Ray, Pratik P.

doi:10.1007/s10509-018-3313-2

Cited by 54 publications

(25 citation statements)

References 51 publications

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“…The Bianchi type (BT) models are the nice and simplest anisotropic models, which completely explain the anisotropic effects. Mishra et al [59] have investigated BT-V string cosmological model with anisotropic distribution of DE. Aditya and Reddy [60] have studied BT-I string models in modified theory of gravity.…”

Section: (): V-volmentioning

confidence: 99%

Kantowski–Sachs Tsallis holographic dark energy model with sign-changeable interaction

Sobhanbabu¹,

Santhi

2021

Eur. Phys. J. C

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In this work devoted to the investigation of the Tsallis holographic dark energy (IR cut-off is Hubble radius) in homogeneous and anisotropic Kantowski–Sachs Universe within the frame-work of Saez–Ballester scalar tensor theory of gravitation. We have constructed non-interacting and interacting Tsallis holographic dark energy models by solving the field equations using the relationship between the metric potentials. This relation leads to a viable deceleration parameter model which exhibits a transition of the Universe from deceleration to acceleration. In interacting case, we focus on sign-changeable interaction between Tsallis holographic dark energy and dark matter. The dynamical parameters like equation of state parameter, energy densities of Tsallis holographic dark energy and dark matter, deceleration parameter, and statefinder parameters of the models are explained through graphical representation. And also, we discussed the stability analysis of the our models.

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Section: (): V-volmentioning

confidence: 99%

Kantowski–Sachs Tsallis holographic dark energy model with sign-changeable interaction

Sobhanbabu¹,

Santhi

2021

Eur. Phys. J. C

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“…Mishra et al. [ 12 ] have found the anisotropy in the dark energy pressure that have evolved at late time. The cosmological models in a non‐interacting two fluid scenario such as the usual dark energy and electromagnetic field have been studied and have shown the dominance of dark energy at the late time of the evolution.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Accelerating Universe with Bulk Viscous Fluid in Bianchi V Space‐Time

Goswami

Yadav²,

Mishra

et al. 2021

Fortschritte der Physik

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In this paper, we have investigated a bulk viscous anisotropic Universe and constrained its model parameters with recent H(z) and Pantheon compilation data. Using cosmic chronometric technique, we estimate the present value of Hubble's constant as H0=69.39±1.54kms−1Mpc−1, 70.016±1.65kms−1Mpc−1 and 69.36±1.42kms−1Mpc−1 by bounding our derived model with recent H(z) data, Pantheon and joint H(z) and Pantheon data respectively. The present age of the Universe is specified as t0=0.9796H0−1∼13.79 Gyrs. The model favours a transitioning Universe with the transition red‐shift as zt=0.73. We have reconstructed the jerk parameter using the observational data sets. From the analysis of the jerk parameter, it is observed that, our derived model shows a marginal departure from the concordance ΛCDM model.

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“…Many authors [24][25][26] also investigated cosmological models with hybrid expansion which stimulates the cosmic transition from deceleration to acceleration epoch. In order to obtain a generalized hybrid universe, we consider a generalized hybrid scale factor of the universe in the form [28,29]…”

Section: Model With Generalized Hybrid Expansion Lawmentioning

confidence: 99%

“…From the WMAP data [23], it is revealed that the standard cosmological model requires positive and dynamic cosmological parameters that resemble the Bianchi universe. Mishra et al [24][25][26] also investigated cosmological models with hybrid expansion law which produce a time-varying deceleration parameter that stimulates the cosmic transition.…”

Section: Introductionmentioning

confidence: 99%

Interaction of Anisotropic Dark Energy with Generalized Hybrid Expansion Law

Alam¹,

Singh²,

Devi³

2022

Advances in High Energy Physics

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Interaction of dark energy in the anisotropic locally rotationally symmetric (LRS) Bianchi type-I metric is investigated in the context of modified f R , T theory of gravity, where R is the Ricci scalar and T is the trace of stress energy momentum tensor. We choose the particular form of the functional f R , T = f 1 R + f 2 T ; then, we find the exact solutions of the field equations by applying inhomogeneous equation of state, p = ω ρ − Λ t , and a generalized form of hybrid expansion law. The transition of deceleration to acceleration is observed in this model. It is also observed that the universe shows accelerated expansion at late epoch. The derived model overlaps with Λ CDM at late time which is in agreement with present observation. Energy conditions of the derived model are also investigated. From the plot, we observe the age of universe t 0 ≈ 13.821 Gyr for the observed H 0 ≈ 70.07 Kms ‐ 1 Mpc ‐ 1 . The physical and geometrical behaviours of these models are also discussed.

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Bianchi-V string cosmological model with dark energy anisotropy

Cited by 54 publications

References 51 publications

Kantowski–Sachs Tsallis holographic dark energy model with sign-changeable interaction

Kantowski–Sachs Tsallis holographic dark energy model with sign-changeable interaction

Modeling of Accelerating Universe with Bulk Viscous Fluid in Bianchi V Space‐Time

Interaction of Anisotropic Dark Energy with Generalized Hybrid Expansion Law

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