6 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…
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…
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…