String cosmological models from early deceleration to current acceleration phase with varying G and

C Chawla, RK Mishra, A Pradhan - The European Physical Journal Plus, 2012 - Springer
Thepresent study deals with spatially homogeneous and anisotropic Bianchi-I cosmological
models representing massive strings with variable G and decaying vacuum energy density …

LRS Bianchi I model with bulk viscosity in gravity

S Jokweni, V Singh, A Beesham - Gravitation and Cosmology, 2021 - Springer
Locally rotationally symmetric Bianchi type-I viscous and nonviscous cosmological models
are explored in general relativity (GR) and in gravity. Solutions are obtained by assuming …

Study of particle creation with quadratic equation of state in higher derivative theory

GP Singh, AR Lalke, N Hulke - Brazilian Journal of Physics, 2020 - Springer
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 …

Bulk viscous LRS Bianchi-I Universe with variable G and decaying Λ

AK Yadav, A Pradhan, AK Singh - Astrophysics and Space Science, 2012 - Springer
The present study deals with spatially homogeneous and totally anisotropic locally
rotationally symmetric (LRS) Bianchi type I cosmological model with variable G and Λ in …

Holographic dark energy in Brans-Dicke theory with logarithmic form of scalar field

CP Singh, P Kumar - International Journal of Theoretical Physics, 2017 - Springer
In this paper, an interacting holographic dark energy model with Hubble horizon as an infra-
red cut-off is considered in the framework of Brans-Dicke theory. We assume the Brans …

Anisotropic bulk viscous cosmological models with particle creation

GP Singh, AY Kale - Astrophysics and Space Science, 2011 - Springer
This paper is devoted to the study of role of particle creation and bulk viscosity on evolution
of homogeneous and anisotropic model of the universe represented by Bianchi type I space …

Particle creation and bulk viscosity in Bianchi-I universe in Saez–Ballester theory with different deceleration parameters

C Chetia, MM Gohain, K Bhuyan - General Relativity and Gravitation, 2023 - Springer
Abstract In Saez–Ballester gravitational theory, we studied the role of particle creation and
bulk viscosity in the evolution of a spatially homogeneous and anisotropic Bianchi type I …

FRW models with particle creation in Brans-Dicke theory

CP Singh - Astrophysics and Space Science, 2012 - Springer
The thermodynamical effect of particle creation on the early evolution of Friedmann-
Robertson-Walker universe is analyzed in the context of open thermodynamical systems …

[HTML][HTML] Reconsidering holographic dark energy in Brans–Dicke theory

P Kumar, A Beesham - The European Physical Journal C, 2022 - Springer
In this paper, we reconsider the concept of holographic dark energy in the framework of
Brans–Dicke theory in the formalism of the flat Friedmann–Lemaitre–Robertson–Walker …

Bulk viscous Bianchi type-V cosmological models with variable gravitational and cosmological constant

GP Singh, AY Kale - International Journal of Theoretical Physics, 2009 - Springer
This paper deals with Bianchi type-V cosmological models of the universe filled with a bulk
viscous cosmic fluid in the framework of general relativity. A new class of exact solutions has …