65 citations · 821 across the 56 of their papers we have counts for
56 papers
First Order Phase Transition Induced Graviton Bremsstrahlung: A Multi Peak Gravitational Wave Signature
Dipendu Bhandari, Rajat Kumar Mandal, Arunansu Sil
Gravitational waves (GWs) from first order phase transitions (FOPTs) are conventionally sourced by bubble collisions, sound waves, and plasma turbulence. We propose a novel microsc…
Reconciling ALP Dark Matter and Electroweak Baryogenesis through First-Order Electroweak Phase Transition
Dipendu Bhandari, Soumen Kumar Manna, Arunansu Sil
We show that an axionlike particle (ALP) can simultaneously generate the baryon asymmetry and constitute dark matter through dynamics triggered by a first-order electroweak phase t…
Exploring Leptogenesis, WIMP Dark Matter, and Gravitational Waves in an extended Scalar Framework
Subhaditya Bhattacharya, Niloy Mondal, Arunansu Sil
We explore an extension of the Type-I seesaw framework in which a scalar mediator connects the Standard Model (SM) to a dark sector consisting of right-handed neutrinos or RHNs…
Impact of First-order Electroweak Phase Transition on QCD Axion
Dipendu Bhandari, Soumen Kumar Manna, Arunansu Sil
The QCD axion addresses the strong CP problem and dark matter via the misalignment mechanism, typically requiring a decay constant GeV), unless the in…
Probing Right Handed Neutrino assisted Reheating with Gravitational Waves and Leptogenesis
Arghyajit Datta, Shaaban Khalil, Rajat Kumar Mandal +1
We investigate a non-instantaneous reheating period in the early Universe, where the inflaton field decays exclusively to right-handed neutrinos (RHNs). The subsequent decay of the…
Probing ALP-portal fermionic dark matter at the colliders
Subhaditya Bhattacharya, Sahabub Jahedi, Soumen Kumar Manna +1
Axion-like particles (ALPs) are promising candidates for mediating interactions between a dark sector and the Standard Model (SM). In this work, considering the effective interacti…