4 papers
Imprint of matter-antimatter asymmetry on collapsing domain walls
Dipendu Bhandari, Debasish Borah, Indrajit Saha
Spontaneous breaking of discrete symmetries play non-trivial role in many well-motivated particle physics models. However, it leads to a network of cosmologically unwanted domain w…
Twin-peaked gravitational wave signal from a dark sector phase transition
Rishav Roshan, Indrajit Saha
We compute the gravitational wave spectrum from a dark sector phase transition driven by spontaneous $\ZDW$ breaking. If the transition is second-order, the only source of gravitat…
Gravitational wave signatures of dark sector portal leptogenesis
Debasish Borah, Devabrat Mahanta, Indrajit Saha
We study the possibility of probing leptogenesis via stochastic gravitational waves (GW) arising from a dark sector assisted first-order electroweak phase transition. The same dark…
Filtered cogenesis of PBH dark matter and baryons
Debasish Borah, Indrajit Saha
We propose a novel cogenesis of baryon and dark matter (DM) in the Universe by utilising a first-order phase transition (FOPT) in the dark sector containing an asymmetric Dirac fer…