22 papers
Universal magic state concentration
Jacopo Rizzo, Lorenzo Leone
Magic plays a dual role in quantum computation: it promotes stabilizer dynamics from efficient classical simulability to universality, but it presents a central challenge for fault…
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…
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…