3 papers
astro-ph.CO2025
New bounds on Memory Burdened Primordial Black Holes from Big Bang Nucleosynthesis
Arnab Chaudhuri, Kazunori Kohri, Valentin Thoss
Primordial black holes (PBHs) with masses below are typically assumed to have negligible cosmological impact due to their rapid evaporation via Hawking radiation. Ho…
hep-ph2025
Neutrino Portal to Extra Dimensions: Unified Origin of Dark Radiation, Dark Matter, and Neutrino Decay
Arnab Chaudhuri
We propose a unified framework based on sterile neutrinos propagating in large extra dimensions (LED) and coupled to a pseudo-Nambu-Goldstone boson (Majoron) arising from spontaneo…
hep-ph2024
The N2HDM, Entropy Production and Stochastic Gravitational Waves
Arnab Chaudhuri, Kazunori Kohri
This study undertakes a reconsideration of the potential for a first-order electroweak phase transition, focusing on the next-to-minimal two Higgs doublet model (N2HDM). Our explor…