Anisotropic cosmological models in f(R,T) gravity with variable deceleration parameter

Sahoo, P. K.; Bishi, Binaya K.

doi:10.1142/s0219887817500979

Cited by 102 publications

(40 citation statements)

References 69 publications

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“…The transitional redshift z t values are 0.588, 0.232, 0.058, and −0.056 for μ = 1.5, 1.7, 1.9, and 2.1 respectively. The special form of q gives scale factor which has been studied by Singha and Debnath [71], Adhav et al [53], and Sahoo et al [72] in their studies respectively as…”

Section: Model IImentioning

confidence: 99%

Study of Particle Creation with Quadratic Equation of State in Higher Derivative Theory

Singh

Lalke

Hulke³

2020

Braz J Phys

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We investigate the effect of particle creation in flat Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime under the higher derivative theory composition. The exact solution of the field equation in higher derivative theory is obtained by considering the quadratic equation of state, p = ωρ 2 − ρ and different forms of deceleration parameter. The physical acceptance and stability of the models are explored by discussing energy conditions and squared sound speed. In addition to that, the statefinder diagnostic pair {r, s} is also scrutinized to measure the deviation of considered models from cold dark matter (CDM) model.

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Section: Model IImentioning

confidence: 99%

Study of Particle Creation with Quadratic Equation of State in Higher Derivative Theory

Singh

Lalke

Hulke³

2020

Braz J Phys

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“…Various cosmological models have been constructed in different choices of f (R, T ) gravity in several aspects [42][43][44][45][46]. Here, we consider the spatially homogeneous LRS Bianchi type-I metric as…”

Section: Field Equations and Solutionsmentioning

confidence: 99%

LRS Bianchi Type-I Bulk Viscous Cosmological Models in f(R, T) Gravity

Sahoo

Reddy

2018

Astrophysics

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We have studied the locally rotationally symmetric (LRS) Bianchi type-I cosmological model in f (R, T ) gravity (R is the Ricci scalar and T is the trace of the stress energy tensor) with Bulk viscous fluid as matter content. The model is constructed for the linear form f (R, T ) = R + 2f (T ). The exact solution of field equations is obtained by using a time varying deceleration parameter q for a suitable choice of the function f (T ). In this work, the bulk viscous pressurep is found to be negative and energy density ρ is found to be positive. The obtained model is anisotropic, accelerating and compatible with the results of astronomical observations. Also, some important features of physical parameters of this model have been discussed.

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“…Sahoo with his coworkers [84][85][86] studied the viability of the spatially regular cosmos along with some other cosmological aspects in f (R, T ) gravity. Moraes et al [64] worked out the stability of some well-known compact stars by computing their corresponding hydrostatic equations in f (R, T ) = R + 2λT gravity.…”

Section: Introductionmentioning

confidence: 99%

Existence of compact structures in f(R, T) gravity

2018

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The present paper is devoted to investigate the possible emergence of relativistic compact stellar objects through modified f (R, T ) gravity. For anisotropic matter distribution, we used Krori and Barura solutions and two notable and viable f (R, T ) gravity formulations. By choosing particular observational data, we determine the values of constant in solutions for three relativistic compact star candidates. We have presented some physical behavior of these relativistic compact stellar objects and some aspects like energy density, radial as well as transverse pressure, their evolution, stability, Eos parameters, measure of anisotropy and energy conditions.

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Anisotropic cosmological models in f(R,T) gravity with variable deceleration parameter

Cited by 102 publications

References 69 publications

Study of Particle Creation with Quadratic Equation of State in Higher Derivative Theory

Study of Particle Creation with Quadratic Equation of State in Higher Derivative Theory

LRS Bianchi Type-I Bulk Viscous Cosmological Models in f(R, T) Gravity

Existence of compact structures in f(R, T) gravity

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