9 papers
Cosmological Realization of Baryon Asymmetry in f(R, G_{μν}T^{μν}) Gravity
Kalyan Malakar, Rajdeep Mazumdar, Kalyan Bhuyan
This work investigates the mechanism of gravitational baryogenesis (GB) under the formalism of f(R, G_{μν}T^{μν}) gravity, where R denotes the Ricci scalar, G_{μν} is the Ein…
From Big Bang Nucleosynthesis to Late-Time Acceleration in Gravity
Rajdeep Mazumdar, Kalyan Malakar, Kalyan Bhuyan
We perform a comprehensive investigation of the early-to-late time cosmic evolution within the framework of gravity, characterized by a non-minimal coupling between non-…
Exploring Cosmic Evolution in Rényi Entropic Cosmology with Constraints from DESI DR2 BAO and GW Data
Rajdeep Mazumdar, Kalyan Malakar, Kalyan Bhuyan
We explore a cosmological model based on Rényi entropic corrections to the Friedmann equations and constrain it using DESI, P-BAO, CC, and gravitational-wave observations. Unlike…
Viability of Big Bang Nucleosynthesis in Some Generalized Horizon Entropies
Kajal Phukan, Rajdeep Mazumdar, Kalyan Malakar +1
In this work, we investigate the viability of some cosmological models derived from generalized horizon entropies, using Big Bang Nucleosynthesis (BBN) constraints. By analyzing th…
Dynamics of Late time cosmology in Gravity with Constraints from DESI DR2 BAO Data
Rajdeep Mazumdar, Kalyan Malakar, Kalyan Bhuyan
We investigate late-time cosmology in the context of modified gravity, considering a non-linear model where, , , , and ar…
Fractional Holographic Dark Energy Driven Reconstruction of Gravity and its Cosmological Implications
Rajdeep Mazumdar, Kalyan Malakar, Kalyan Bhuyan
In order to explain the late-time acceleration of the Universe, we present a reconstructed version of the gravity theory in this work, which is inspired by the integrating t…