135 citations · 700 across the 24 of their papers we have counts for
24 papers
Cosmology Embedded in a Viscous Barotropic Fluid
Suraj Kumar Behera, Raja Solanki, Pratik P. Ray
We examine the cosmological dynamics of a viscous fluid within the framework of gravity by using a barotropic equation of state for cosmic fluid. The modified…
Polytropic cosmology and its implications for the tension
Raja Solanki
Understanding the late-time cosmic phenomenon of the universe commonly referred to as the dark energy problem, which is one of the prominent tension in the field of theoretical as…
Cosmological constraints on gravity models in the non-coincident formalism
Sneha Pradhan, Raja Solanki, P. K. Sahoo
The article investigates cosmological applications of theories in a non-coincident formalism. We explore a new theory dynamics utilizing a non-vanishing affine connec…
Bulk viscous cosmological model in modified gravity
Raja Solanki, Aaqid Bhat, P. K. Sahoo
This article explores the impact of bulk viscosity on understanding the universe's accelerated expansion within the context of modified gravity, which is an exte…
Extended Bose-Einstein condensate dark matter in gravity
Aaqid Bhat, Raja Solanki, P. K. Sahoo
In this article, we attempt to explore the dark sector of the universe i.e. dark matter and dark energy, where the dark energy components are related to the modified Lagrang…
Bouncing cosmological models in gravity
Lakhan V. Jaybhaye, Raja Solanki, P. K. Sahoo
This article explores matter bounce non-singular cosmology in gravity. We consider two non-linear functional forms, specifically, $f(R,L_m) = \frac{R}{2} + λR…
Dynamical system analysis of Dirac-Born-Infeld scalar field cosmology in coincident gravity
Sayantan Ghosh, Raja Solanki, P. K. Sahoo
In this article, we offer the dynamical system analysis of the DBI (Dirac-Born-Infeld) scalar field in a modified gravity context. We have taken a polynomial form of modifie…
Phase-space analysis of the viscous fluid cosmological models in the coincident gravity
Dheeraj Singh Rana, Raja Solanki, P. K. Sahoo
In this article, we consider a newly proposed parameterization of the viscosity coefficient , specifically , where withi…
Dynamical system analysis of scalar field cosmology in coincident gravity
Sayantan Ghosh, Raja Solanki, P. K. Sahoo
In this article, we investigate scalar field cosmology in the coincident gravity formalism. We calculate the motion equations of gravity under the flat Friedmann-Lema…
Wormhole solutions in gravity
Raja Solanki, Zinnat Hassan, P. K. Sahoo
In this work, we intend to explore wormhole geometries in the framework of gravity. We derive the field equations for the generic function by assuming the sta…
Cosmic acceleration with bulk viscosity in an anisotropic background
Raja Solanki, Bina Patel, Lakhan V. Jaybhaye +1
In this article, we investigate the observed cosmic acceleration in the framework of a cosmological model dominated by bulk viscous matter in an anisotropic background.…
Constraining viscous dark energy equation of state in gravity
Lakhan V. Jaybhaye, Raja Solanki, Sanjay Mandal +1
In this article, we attempt to describe cosmic late-time acceleration of the universe in the framework of gravity by using an effective equation of state when the accoun…
gravity, its covariant formulation, energy conservation and phase-space analysis
Tee-How Loo, Raja Solanki, Avik De +1
In the present article we analyze the matter-geometry coupled theory of gravity. We offer the fully covariant formulation of the theory, with which we construct the correc…
Scalar field evolution at background and perturbation levels for a broad class of potentials
Genly Leon, Saikat Chakraborty, Sayantan Ghosh +3
In this paper, we investigate a non-interacting scalar field cosmology with an arbitrary potential using the -deviser method that relies on the differentiability properties of t…
Viscous fluid cosmology in symmetric teleparallel gravity
Raja Solanki, Dheeraj Singh Rana, Sanjay Mandal +1
In this manuscript, we analyze the viscous fluid cosmological model in the framework of recently proposed gravity by assuming three different forms of bulk viscosity coeffic…
Statefinder Analysis of Symmetric Teleparallel Cosmology
Raja Solanki, P. K. Sahoo
Statefinder diagnostic is a convenient method that can differentiate between the various dark energy models. In this article, we analyze the statefinder parameters in symmetric tel…
Bulk viscous fluid in symmetric teleparallel cosmology: theory versus experiment
Raja Solanki, Simran Arora, P. K. Sahoo +1
The standard formulation of General Relativity Theory, in the absence of a cosmological constant, is unable to explain the responsible mechanism for the observed late-time cosmic a…
Cosmology in gravity
Lakhan V. Jaybhaye, Raja Solanki, Sanjay Mandal +1
In this letter, we investigate the cosmic expansion scenario of the universe in the framework of gravity theory. We consider a non-linear model, specifically,…
Complete dark energy scenario in gravity
Raja Solanki, Avik De, P. K. Sahoo
In theoretical physics, the fundamental nature and evolution mechanism of dark energy is still an open question. In General Relativity Theory, the simplest explanation for dark ene…
Accelerating expansion of the universe in modified symmetric teleparallel gravity
Raja Solanki, Avik De, Sanjay Mandal +1
The fundamental nature and origin of dark energy are one of the premier mysteries of theoretical physics. In General Relativity Theory, the cosmological constant is the simples…
How a conformally flat (GR)4 impacts Gauss-Bonnet gravity?
Avik De, Tee-How Loo, Raja Solanki +1
First and foremost, we show that a 4-dimensional conformally flat generalized Ricci recurrent spacetime is an Einstein manifold. We examine such a spacetime as a solution…
Cosmic acceleration with bulk viscosity in modified gravity
Raja Solanki, S. K. J. Pacif, Abhishek Parida +1
In this article, we have investigated the role of bulk viscosity to study the accelerated expansion of the universe in the framework of modified gravity. The gravitational a…
A Conformally Flat Generalized Ricci Recurrent Spacetime in F(R)-Gravity
Avik De, Tee-How Loo, Raja Solanki +1
In the present paper we study a conformally flat generalized Ricci recurrent perfect fluid spacetime with constant Ricci scalar as a solution of modified -gravity theory. We…
Algorithms for Generating All Static Spherically Symmetric (An)isotropic Fluid Solutions of Einstein's Equations
M M Akbar, R Solanki
We study the Einstein equations of the static spherically symmetric anisotropic fluid system in curvature coordinates to find algorithms that generate all solutions and all solutio…