76 citations · 1.3k across the 130 of their papers we have counts for
22 papers · 1 filter
Cosmic Strings Gravitational Wave Probe of Leptogenesis: Thermal, Non-thermal, Near-resonant and Flavourful
Anish Ghoshal, Angus Spalding, Graham White
Breaking a global or local symmetry at high scales simultaneously generates Majorana masses for heavy right-handed neutrinos and produces a network of cosmic strin…
Grand Unification Higgs- Inflation: Complementarity between Proton Decay and CMB Observables
Nilay Bostan, Rafid H. Dejrah, Anish Ghoshal
We propose a predictive Grand Unified Theory (GUT) framework for cosmic inflation in the Palatini formulation of gravity. In this model, a GUT Higgs field…
Gravitational Wave Spectral Shapes as a probe of Long Lived Right-handed Neutrinos, Leptogenesis and Dark Matter: Global versus Local B-L Cosmic Strings
Satyabrata Datta, Anish Ghoshal, Angus Spalding +1
The scale of the seesaw mechanism is typically much larger than the electroweak scale. This hierarchy can be naturally explained by symmetry, which after spontaneous s…
CMB observables and reheat temperature as a window to models of inflation and freeze-in dark matter production
Anish Ghoshal, Paweł Kozów, Marek Olechowski +1
A systematic approach is presented for using CMB observables and reheating temperature for discriminating between various models of inflation and certain freeze-in dark matter scen…
Testing Seesaw and Leptogenesis via Gravitational Waves: Majorana versus Dirac
Anish Ghoshal, Kazunori Kohri, Nimmala Narendra
We investigate the B-L gauge extension of the Standard Model that the Dirac seesaw mechanism with thermal Leptogenesis can be tested using the stochastic gravitational background (…
Impact of Non-Thermal Leptogenesis with Early Matter Domination on Gravitational Waves from First-order Phase Transition
Dilip Kumar Ghosh, Anish Ghoshal, Koustav Mukherjee +2
We study the impact of non-thermal leptogenesis on the spectrum of gravitational waves (GWs) produced by a strong first-order phase transition in the early Universe. We consider a…