Higher dimensional Bianchi type-III string cosmological models with dark energy in Saez–Ballester scalar-tensor theory of gravitation

Dabgar, R. K.; Bhabor, A. K.

doi:10.1007/s12036-023-09971-7

J Astrophys Astron

2023

DOI: 10.1007/s12036-023-09971-7

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Higher dimensional Bianchi type-III string cosmological models with dark energy in Saez–Ballester scalar-tensor theory of gravitation

R. K. Dabgar,

A. K. Bhabor

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2024

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Cited by 3 publications

References 26 publications

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Barrow holographic dark energy: reconstruction within Saez-Ballester theory in Kantowski-Sachs universe

Chokyi,

Chattopadhyay,

Tawfik

2024

Phys. Scr.

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Within the framework of the Saez-Ballester theory, the Barrow Holographic Dark Energy (BHDE) has been reconstructed. This reconstruction was carried out in a homogeneous and anisotropic KS universe that was filled with BHDE. The study examined both non-interacting and interacting scenarios, with the future event horizon serving as the IR cut-off. The analysis focused on the evolution of the Equation of State parameter for both cases, as well as the trajectories of $w_{DE}-w'_{DE}$. Additionally, the study investigated the inflation of the universe filled with BHDE by plotting the slow-roll parameters. Furthermore, a connection between the canonical scalar field and BHDE was explored, as the presence of a scalar field is often associated with inflation. Finally, the tensor-to-scalar ratio $r$ is plotted which seems to lie within the acceptable range.

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Barrow holographic dark energy: reconstruction within Saez-Ballester theory in Kantowski-Sachs universe

Chokyi,

Chattopadhyay,

Tawfik

2024

Phys. Scr.

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Studies on Bianchi type-III cosmological model with parametrization of deceleration parameter in a SBST theory

Singh,

Meitei

2024

Mod. Phys. Lett. A

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In this paper, we delve into the cosmological assessments concerning the deceleration parameter [Formula: see text] in the context of the Bianchi type-III cosmological model within the framework of the Saez–Ballester theory of gravitation. By postulating a proportional relationship between the shear scalar ([Formula: see text]) and the expansion scalar ([Formula: see text]), we derive solutions for the corresponding field equations. Additionally, we conduct an examination and evaluation of the model’s physical and kinematic parameters, including the jerk parameter and snap parameter, while also discussing the energy condition of the model. Through the depiction of graphical representations, we illustrate the variations of the cosmological parameters for specific sets of constants.

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LRS Bianchi Cosmological Model in Saez-Ballester Theory of Gravity with Time Varying Cosmological Constant

Mahanta,

Basumatary

2024

East Eur. J. Phys.

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The present work deals with the study of a locally rotationally symmetric (LRS) Bianchi type-I cosmological model in the framework of a scalar-tensor theory of gravity formulated by Saez and Ballester with time varying cosmological constant. To obtain the explicit solutions of the Saez-Ballester field equations we assume the average scale factor to obey a power law expansion and the cosmological constant to be proportional to the energy density of the cosmic fluid. The dynamical behaviour of relevant cosmological parameters including the Hubble parameter, the deceleration parameter, the energy density, the pressure, the equation of state parameter, the cosmological constant, the shear scalar, the expansion scalar etc. are investigated graphically by examining their evolution versus the redshift parameter. The validation of the four energy conditions are also checked. We find the outcomes of the constructed model to be in good agreement with the recent observational data.

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Higher dimensional Bianchi type-III string cosmological models with dark energy in Saez–Ballester scalar-tensor theory of gravitation

Cited by 3 publications

References 26 publications

Barrow holographic dark energy: reconstruction within Saez-Ballester theory in Kantowski-Sachs universe

Barrow holographic dark energy: reconstruction within Saez-Ballester theory in Kantowski-Sachs universe

Studies on Bianchi type-III cosmological model with parametrization of deceleration parameter in a SBST theory

LRS Bianchi Cosmological Model in Saez-Ballester Theory of Gravity with Time Varying Cosmological Constant

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