299 citations · 868 across the 43 of their papers we have counts for
7 papers · 1 filter
Leptogenesis, Dark Matter and Gravitational Waves from Discrete Symmetry Breaking
Subhaditya Bhattacharya, Niloy Mondal, Rishav Roshan +1
We analyse a model that connects the neutrino sector and the dark sector of the universe via a mediator , stabilised by a discrete symmetry that breaks to a remnant …
Relic neutrino decay solution to the excess radio background
P. S. Bhupal Dev, Pasquale Di Bari, Ivan Martínez-Soler +1
The excess radio background detected by ARCADE 2 represents a puzzle within the standard cosmological model. There is no clear viable astrophysical solution, and therefore, it migh…
Quantum Gravity Effects on Fermionic Dark Matter and Gravitational Waves
Stephen F. King, Rishav Roshan, Xin Wang +2
We explore the phenomenological consequences of breaking discrete global symmetries in quantum gravity (QG). We extend a previous scenario where discrete global symmetries are resp…
Quantum Gravity Effects on Dark Matter and Gravitational Waves
Stephen F. King, Rishav Roshan, Xin Wang +2
We explore how quantum gravity effects, manifested through the breaking of discrete symmetry responsible for both Dark Matter and Domain Walls, can have observational effects throu…
Baryon asymmetry from dark matter decay
Debasish Borah, Suruj Jyoti Das, Rishav Roshan
We propose a novel framework where baryon asymmetry can arise due to forbidden decay of dark matter (DM) enabled by finite temperature effects in the early universe. In order to im…
Imprint of PBH domination on gravitational waves generated by cosmic strings
Debasish Borah, Suruj Jyoti Das, Rishav Roshan +1
We study the effect of an ultra-light primordial black hole (PBH) dominated phase on the gravitational wave (GW) spectrum generated by a cosmic string (CS) network formed as a resu…
Flavor Leptogenesis During Reheating Era
Arghyajit Datta, Rishav Roshan, Arunansu Sil
Recently, it has been shown that the presence of a non-instantaneous era of reheating can significantly alter the charged lepton(s) equilibration temperature(s) which plays importa…