11 papers
Viability of Big Bang Nucleosynthesis in Gravity
Kajal Phukan, Rajdeep Mazumdar, Kalyan Malakar +1
We examine the viability of Big Bang Nucleosynthesis (BBN) constraints in gravity, where the gravitational Lagrangian is an arbitrary function of the the Ricci scalar $R…
Quantum-Corrected Thermodynamics and Phase Structure of AdS Euler-Heisenberg Black Hole
Siddhartha Sankar Borah, Dhruba Jyoti Gogoi, Kalyan Bhuyan
We investigate the thermodynamic behaviour of an AdS black hole arising from nonlinear electrodynamics-corrected gravity, incorporating quantum effects through thermal fluctuations…
Statistical insights on the decorrelation lengths of solar wind parameters at L1 point under varying conditions
Yogesh, Aparupa Apsara Baruah, Dibyendu Chakrabarty +3
Understanding the spatial coherence of solar wind plasma and magnetic field properties is essential for interpreting multi-spacecraft observations and for characterizing the large-…
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 Einstein…
Astrophysical Signature and Optical Appearance of Weyl--Corrected Einstein--Maxwell Black Holes
Hassan Hassanabadi, Mrinnoy M. Gohain, Kalyan Bhuyan +1
In this work, we investigate the physics of charged black holes modified by Weyl corrections, which emerge from the non-minimal coupling between spacetime curvature and electromagn…
Exploring Rényi Entropic Cosmology Constrained by DESI DR2 BAO and Complementary Late-Time Observations
Rajdeep Mazumdar, Kalyan Malakar, Kalyan Bhuyan
We investigate the late-time cosmological viability of Rényi entropic cosmology (REC) by confronting its modified Friedmann dynamics with DESI DR2 BAO, cosmic chronometers, gravita…