75 citations · 583 across the 36 of their papers we have counts for
36 papers
Perturbation Dynamics and Structure Formation in Extended Proca-Nuevo Gravity
N. S. Kavya, Avik De, Tee-How Loo
A comprehensive analysis of cosmological perturbations and structure formation is presented for the Extended Proca-Nuevo (EPN) framework, a vector-tensor extension of General Relat…
Scalar field coupled to boundary in non-metricity: a new avenue towards dark energy
Ghulam Murtaza, Avik De, Tee-How Loo +1
While conformal transformations in metric scalar-tensor theories recover General Relativity, this feature is notably absent in standard non-metricity-based theories. We demonstrate…
Can an Extra Degree of Freedom in Scalar-Tensor Non-Metricity Gravity Account for the Evolution of the Universe?
Ghulam Murtaza, Avik De, Andronikos Paliathanasis +1
We investigate whether the extra scalar degree of freedom that arises in the second connection class of scalar-tensor non-metricity gravity can accurately replicate and potentially…
Phase-space analysis of an anisotropic universe in gravity
Ghulam Murtaza, Avik De, Tee-How Loo +2
In this study, we analyze the anisotropic universe in gravity theory. To achieve this, we consider three specific models of gravity and rewrite the equations of m…
Emergent Universe in f(Q) gravity theories
Hamid Shabani, Avik De, Tee-How Loo
One resolution of the ancient cosmic singularity, i.e., the Big Bang Singularity (BBS), is to assume an inflationary stage preceded by a long enough static state in which the unive…
Scalar perturbation and density contrast evolution in gravity
Ganesh Subramaniam, Avik De, Tee-How Loo +1
The symmetric teleparallel theory offers an alternative gravitational formulation which can elucidate events in the early and late universe without requiring the physical existence…
The cosmological significance of boundary term in non-metricity gravity
Hamid Shabani, Avik De, Tee-How Loo
Within the context of metric-affine gravity, we examine the significance of the boundary term in symmetric teleparallel gravity by employing the cosmological dynamical system analy…
Non-metricity with bounday terms: gravity and cosmology
Avik De, Tee-How Loo, Emmanuel N. Saridakis
We formulate gravity and cosmology. Such a construction is based on the symmetric teleparallel geometry, but apart form the non-metricity scalar we incorporate in the…
Cosmology of gravity in non-flat Universe
Hamid Shabani, Avik De, Tee-How Loo +1
We investigate the cosmological implications of gravity, which is a modified theory of gravity based on non-metricity, in non-flat geometry. We perform a detailed dynamical-…
Energy condition bounds on model parameters in a curved FLRW universe
Ganesh Subramaniam, Avik De, Tee-How Loo +1
In this exclusive study of the modified theory of gravity in the open and closed type Friedmann-Lemaître-Robertson-Walker (FLRW) universe model, we impose some constraints f…
Anisotropic Universe in gravity, a novel study
Tee-How Loo, M. Koussour, Avik De
theory of gravity is very recently proposed to incorporate within the action Lagrangian, the trace of the energy-momentum tensor along with the non-metricity scalar $Q…
How different connections in flat FLRW geometry impact energy conditions in theory?
Ganesh Subramaniam, Avik De, Tee-How Loo +1
In this study of the modified theory of gravity in the spatially flat Friedmann-Lemaître-Robertson-Walker (FLRW) spacetime, we explore all the affine connections compatible…
Phase-space analysis of a novel cosmological model in theory
Hamid Shabani, Avik De, Tee-How Loo
The vanishing affine connections have been used solely while adopting the modified gravity theory to the cosmology. Consequently, researchers could not get beyond what is al…
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…
On the viability of gravity models
Avik De, Tee-How Loo
In general relativity, the contracted Bianchi identity makes the field equation compatible with the energy conservation, likewise in theories of gravity. We show that this c…
Impact of curvature based geometric constraints on theory
Tee-How Loo, Avik De, Simran Arora +1
Theories of gravity are fundamentally a relation between matter and the geometric structure of the underlying spacetime. So once we put some additional restrictions on the spacetim…
Isotropization of locally rotationally symmetric Bianchi-I universe in -gravity
Avik De, Sanjay Mandal, J. T. Beh +2
Despite having the somewhat successful description of accelerated cosmology, the early evolution of the universe always challenges mankind. Our promising approach lies in a new cla…
How a projectively flat geometry regulates -gravity theory?
Tee-How Loo, Avik De, Sanjay Mandal +1
In the present paper we examine a projectively flat spacetime solution of -gravity theory. It is seen that once we deploy projective flatness in the geometry of the spacetime…
Periodic cosmic evolution in gravity formalism
Parbati Sahoo, Avik De, Tee-How Loo +1
We study the periodic cosmic transit behavior of accelerated universe in the framework of symmetric teleparallelism. The exact solution of field equations is obtained by employing…
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…
Geodesic Deviation Equation In -Gravity
Jing-Theng Beh, Tee-how Loo, Avik De
In the present paper we study the Geodesic Deviation Equation (GDE) in the modified -gravity theories. The formulation of GDE in General Relativity in the case of the homogen…
A classification of conformally flat generalized Ricci recurrent pseudo-Riemannian manifolds
Avik De, Loo-Tee How
Conformally flat pseudo-Riemannian manifolds with generalized Ricci recurrent, structure are completely classified in this short report. A conformally flat generalized Ric…
Almost pseudo-Ricci symmetric spacetime solutions in -gravity
Avik De, Loo-Tee How
The objective of the present paper is to study 4-dimensional almost pseudo Ricci symmetric perfect fluid spacetimes . We show that a Robertson-Walker spacetime is $(APRS)…
Energy conditions for a spacetime in -gravity
Avik De, Tee-How Loo, Simran Arora +1
The objective of the present paper is to study 4-dimensional weakly Ricci symmetric spacetimes with non-zero constant Ricci scalar. We prove that such a satisfy…