Bianchi type strange quark cosmological models in a modified theory of gravity

Santhi, M. Vijaya; Chinnappalanaidu, T.

doi:10.1007/s13370-022-01032-6

Cited by 5 publications

(1 citation statement)

References 71 publications

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“…Here, r and s are positive constants. Many studies have been done with this form of scale factor in isotropic and anisotropic spacetime models (e.g., [57,67,[73][74][75][76][77][78][79][80]).…”

Section: Model Iii: Hybrid Scale Factormentioning

confidence: 99%

Plane Symmetric Cosmological Model with Strange Quark Matter in f(R,T) Gravity

Singh,

Jokweni,

Beesham

2023

Universe

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A plane symmetric Bianchi-I model filled with strange quark matter (SQM) was explored in f(R,T)=R+2λT gravity, where R is the Ricci scalar, T is the trace of the energy-momentum tensor, and λ is an arbitrary constant. Three different types of solutions were obtained. In each model, comparisons of the outcomes in f(R,T) gravity and bag constant were made to comprehend their roles. The first power-law solution was obtained by assuming that the expansion scalar is proportional to the shear scalar. This solution was compared with a similar one obtained earlier. The second solution was derived by assuming a constant deceleration parameter q. This led to two solutions: one power-law and the other exponential. Just as in the case of general relativity, we can obtain solutions for each of the different eras of the universe, but we cannot obtain a model which shows transitional behavior from deceleration to acceleration. However, the third solution is a hybrid solution, which shows the required transition. The models start off with anisotropy, but are shear free at late times. In general relativity, the effect of SQM is to accelerate the universe, so we expect the same in f(R,T) gravity.

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Section: Model Iii: Hybrid Scale Factormentioning

confidence: 99%

Plane Symmetric Cosmological Model with Strange Quark Matter in f(R,T) Gravity

Singh,

Jokweni,

Beesham

2023

Universe

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Viscous Ricci Dark Energy Cosmological Models in Brans-Dicke Theory

Vijaya Santhi,

Chinnappalanaidu,

Srivani Madhu

2023

Astrophysics

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Compact object formation from collapsing magnetized strange quark matter in rainbow gravity

Tasleem,

Sheikh,

Ali

2023

Int. J. Geom. Methods Mod. Phys.

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This study focuses on the dynamics of magnetized strange quark matter collapsing near a star in rainbow gravity. The study computes various dynamical variables, including mass density, pressure, and magnetic field strength, to ensure the physical existence of the fluid, and graphically verifies the energy conditions. These variables combine to form a black hole, and the study estimates the time and distance of apparent horizon formation, which are both reduced by the magnetic field. Additionally, the study observes that the energy of probing particles impacts mass density, pressure, magnetic field intensity, distance, and time of horizon creation, which helps to resolve the information paradox. It is also noticed that the magnetic field accelerates the collapse.

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Bianchi type strange quark cosmological models in a modified theory of gravity

Cited by 5 publications

References 71 publications

Plane Symmetric Cosmological Model with Strange Quark Matter in f(R,T) Gravity

Plane Symmetric Cosmological Model with Strange Quark Matter in f(R,T) Gravity

Viscous Ricci Dark Energy Cosmological Models in Brans-Dicke Theory

Compact object formation from collapsing magnetized strange quark matter in rainbow gravity

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