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Mini-review on the production of Primordial Black Holes from First-Order Phase Transitions in the Early Universe
Indra Kumar Banerjee, Ujjal Kumar Dey, Shaaban Khalil
We review the creation mechanism of primordial black holes from first order phase transitions. We discuss various model-dependent and independent mechanisms and relate the properti…
Radiative symmetry breaking in a gauged Zee-Babu model and its gravitational wave imprints
Indra Kumar Banerjee, Nabarun Chakrabarty, Ujjal Kumar Dey
We construct a classically scale invariant version of the Zee-Babu model governed by an gauge symmetry wherein three right handed neutrinos with identical gauge charge…
Superradiant and dynamical spin-down of neutron stars with gravitational wave implications
Indra Kumar Banerjee, Sandeep Chatterjee, Biswarup Das +1
Neutron stars such as pulsars and magnetars lose angular momentum primarily through electromagnetic dipole radiation, gravitational waves, -mode oscillation, and also affected b…
Neutrino Decoherence via Modified Dispersion
Bikash Kumar Acharya, Indra Kumar Banerjee, Ujjal Kumar Dey
We study in detail the effect of quantum decoherence in neutrino oscillations. We adopt a phenomenological approach that allows us to parametrize the energy dependence of the decoh…
Bounds on Exotic Couplings from a New -Background
Indra Kumar Banerjee, Ujjal Kumar Dey, Anna John
We propose a hitherto unexplored neutrino background emerging from the mechanism of quenched superradiance of rotating primordial black holes. The quenching of the phenomenon happe…
Multi-messenger Astronomy with Quenched Superradiance
Indra Kumar Banerjee, Soumya Bonthu, Ujjal Kumar Dey
We propose a novel method to study the ultra-light bosons, where compact rotating objects undergo the phenomenon of quenched superradiance to create gravitational waves and neutrin…