Homogeneous and anisotropic cosmologies with affine EoS: a dynamical system perspective
A Singh - The European Physical Journal C, 2023 - Springer
We study a class of homogeneous and anisotropic geometries with affine equation of state
(EoS) for different physically plausible scenarios of the universe evolution using dynamical …
(EoS) for different physically plausible scenarios of the universe evolution using dynamical …
Qualitative study of Lyra cosmologies with spatial curvature
A Singh - Chinese Journal of Physics, 2022 - Elsevier
We investigate the spatially curved Friedmann–Robertson–Walker space–time with Lyra
geometry model. The cosmological solutions are studied by using dynamical system …
geometry model. The cosmological solutions are studied by using dynamical system …
Observational constraints and cosmological implications of NLE model with variable G
We explore the cosmic dynamics of a homogeneous and isotropic cosmological model
having flat spatial section driven by nonlinear electrodynamics (NLE) with the Newtonian …
having flat spatial section driven by nonlinear electrodynamics (NLE) with the Newtonian …
Aspects of some Rastall cosmologies
A Singh, KC Mishra - The European Physical Journal Plus, 2020 - Springer
Rastall gravity paradigm producing mechanism for realizing singular and non-singular
cosmologies has been investigated. A solution in Rastall gravity with flat spatial sections …
cosmologies has been investigated. A solution in Rastall gravity with flat spatial sections …
Late-time acceleration from ekpyrotic bounce in gravity
In this paper, we investigate the late-time accelerated universe evolution in a flat,
homogeneous and isotropic model in the context of f (Q, T) gravity, where Q and T are non …
homogeneous and isotropic model in the context of f (Q, T) gravity, where Q and T are non …
Dynamical Chern–Simons gravity with interacting dark energy: Qualitative and observational features
We investigate the flat-FRW model in the dynamical Chern–Simons gravity with interacting
dark energy. We use dynamical system analysis to illustrate the outcomes of the model. The …
dark energy. We use dynamical system analysis to illustrate the outcomes of the model. The …
Qualitative aspects of Kantowski–Sachs cosmologies with cosmological constant and stiff fluid
A Singh - The European Physical Journal Plus, 2023 - Springer
Abstract Homogeneous and anisotropic Kantowski–Sachs model sourced by a stiff fluid and
cosmological constant has been explored for different possible scenarios of the universe …
cosmological constant has been explored for different possible scenarios of the universe …
[HTML][HTML] Possible existence of traversable wormhole in Finsler–Randers geometry
KP Das, U Debnath - The European Physical Journal C, 2023 - Springer
In the present article, we have explored the possible existence of a traversable wormhole in
the framework of Finsler–Randers (F–R) geometry. In order to achieve this goal, first, we …
the framework of Finsler–Randers (F–R) geometry. In order to achieve this goal, first, we …
On the anisotropic bouncing universe with viscosity
We investigate the role of bulk and shear viscosity in the spatially homogeneous anisotropic
spacetime, in particular, the Kantowski–Sachs (KS) spacetime. General conditions for the …
spacetime, in particular, the Kantowski–Sachs (KS) spacetime. General conditions for the …
Qualitative aspects of Rastall gravity with barotropic fluid
We investigate the dynamical evolution of a homogeneous and isotropic flat universe filled
with a barotropic fluid satisfying the linear equation of state in Rastall gravity. Using the …
with a barotropic fluid satisfying the linear equation of state in Rastall gravity. Using the …