3 papers
gr-qc2025
Dynamics of late time universe in gravity
Bikash Chandra Roy, Aroonkumar Beesham, Bikash Chandra Paul
We construct cosmological model in nonmetricity scalar functional gravitational Lagrangian which describes the dynamical evolution of the late accelerating universe. Cosmolo…
astro-ph.CO2025
Parametrization Framework for the Deceleration Parameter in Scalar Field Dark Energy Model
Aroonkumar Beesham
We propose a Friedmann-Lemaitre-Robertson-Walker cosmological model with a scalar field that represents dark energy. A new parametrization of the deceleration parameter is introduc…
gr-qc2024
Observational Constraints on Model with specific q
Aroonkumar Beesham
We place observational constraints on an FLRW cosmological model in gravity with a specific deceleration parameter that depends on the scale factor. This form of the dec…