299 citations · 868 across the 43 of their papers we have counts for
6 papers · 1 filter
Leptogenesis with Majoron Dark Matter
Stephen F. King, Soumen Kumar Manna, Rishav Roshan +1
We discuss a model of neutrino mass based on the type I seesaw mechanism embedded in a spontaneously broken global lepton number framework with a symmetry. We show that the r…
Gravitational Wave Production During Reheating: From the Inflaton to Primordial Black Holes
Mathieu Gross, Essodjolo Kpatcha, Yann Mambrini +2
We calculate the gravitational waves (GWs) produced by primordial black holes (PBHs) in the presence of the inflaton condensate in the early Universe. Combining the GW production f…
Testing leptogenesis and dark matter production during reheating with primordial gravitational waves
Basabendu Barman, Arindam Basu, Debasish Borah +2
We study the generation of baryon asymmetry as well as dark matter (DM) in an extended reheating period after the end of slow-roll inflation. Within the regime of perturbative rehe…
Relic neutrino decay: a solution to the excess radio background
Rishav Roshan
The detection of excess radio background detected by ARCADE 2 suggests the presence of new physics as there exists no clear astrophysical solution. We find that the radiative decay…
Observable gravitational waves and with global lepton number symmetry and dark matter
Debasish Borah, Nayan Das, Rishav Roshan
We study the possibility of testing a dark matter (DM) scenario embedded in a global lepton number symmetry via gravitational waves (GW) and cosmic microwave background (C…
Using gravitational waves to see the first second of the Universe
Rishav Roshan, Graham White
Gravitational waves are a unique probe of the early Universe, as the Universe is transparent to gravitational radiation right back to the end of inflation. In this article, we summ…