2 citations · 2 across the 14 of their papers we have counts for
14 papers
Leptogenesis and Planck-scale black hole remnants in a Pati-Salam cosmology
Arnab Chaudhuri, Erdenebulgan Lkhagvadorj, Satyabrata Mahapatra
We study leptogenesis and Planck-scale remnant dark matter from primordial black hole (PBH) evaporation in a minimal Pati-Salam cosmology, with the gauge symmetry broken before inf…
Non-Markovian Electroweak Baryogenesis: Memory Effects on CP-Violating Transport and Gravitational Waves
Arnab Chaudhuri
We develop a non-Markovian extension of electroweak baryogenesis within the Schwinger--Keldysh real-time effective field theory framework and the Kadanoff--Baym hierarchy. When the…
Memory-Burden Suppression of Hawking Radiation and Neutrino Constraints on Primordial Black Holes
Arnab Chaudhuri
We investigate the impact of quantum gravitational memory-burden effects on high-energy neutrino signals from evaporating primordial black holes and the resulting constraints from…
Dark Temperature Hierarchies and Gravitational Waves from the Electroweak Phase Transition
Arnab Chaudhuri
We investigate the impact of a semi-decoupled dark sector with a temperature hierarchy relative to the Standard Model plasma on the electroweak phase transition and its associated…
Primordial black hole evaporation in a thermal bath and gravitational waves
Arnab Chaudhuri, Kousik Loho
Primordial black holes (PBHs) formed in the early Universe evaporate via Hawking radiation and constitute a generic source of stochastic gravitational waves. Existing studies of gr…
Anisotropic Neutrino Emission from Spinning, Moving, and Charged Primordial Black Holes
Arnab Chaudhuri
The angular and spectral features of neutrinos emitted from primordial black holes (PBHs) carry key imprints of the black hole's fundamental properties. This work investigates the…
Gravitational Wave Signatures of Breaking and Right-Handed Neutrino Dynamics
Arnab Chaudhuri, Priya Mishra, Rukmani Mohanta
The Standard Model (SM) leaves several fundamental questions unanswered, including the origin of neutrino masses, the baryon asymmetry of the Universe, and the nature of dark matte…
Directional Neutrino Bursts from Spinning and Moving Primordial Black Holes
Arnab Chaudhuri, Priya Mishra, Rukmani Mohanta
We show that primordial black holes (PBHs) with significant spin and bulk motion produce sharply collimated neutrino bursts from Hawking evaporation, arising from the interplay of…
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…
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…
Neutrino Fluence influenced by Memory Burdened Primordial Black Holes
Arnab Chaudhuri, Koushik Pal, Rukmani Mohanta
We study the impact of quantum gravitational memory burden - a backreaction effect that suppresses black hole evaporation - on neutrino signals from primordial black holes (PBHs).…
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…
Dark Matter from Evaporating Primordial Black Holes in the Early Universe
Pratik Chattopadhyay, Arnab Chaudhuri, Maxim Yu. Khlopov
Primordial Black Holes (PBH) could dominate in the early universe and, evaporating before Big bang Nucleosynthesis, can provide new freeze in mechanism of dark matter (DM) producti…
Balancing Asymmetric Dark Matter with Baryon Asymmetry by Sphaleron Transitions
Arnab Chaudhuri, Maxim Yu. Khlopov
The effect of the electroweak sphaleron transition in balance between baryon excess and and the excess of stable quarks of 4th generation is studied in this paper. Considering the…