92 citations · 153 across the 5 of their papers we have counts for
6 papers
Test of Kerr-Sen metric with black hole observations
Ashish Narang, Subhendra Mohanty, Abhass Kumar
The Kerr-Sen black hole is a rotating charged black hole solution arising from heterotic string theory. In 4-dimensions effective theory the bosonic fields are: a gauge boso…
Soft leptogenesis in the NMSSM with a singlet right-handed neutrino superfield
Waleed Abdallah, Abhass Kumar, Abhijit Kumar Saha
In this work, we explore soft leptogenesis in the NMSSM framework extended by a right-handed neutrino superfield. We calculate the CP asymmetry, , and find it to be no…
Inflation and Reheating with a Fermionic Field
Abhass Kumar
Inflation has long been the accepted paradigm for understanding the early universe. Most models of inflation have a scalar field acting as the inflaton particle which decays after…
TeV scale leptogenesis, inflaton dark matter and neutrino mass in a scotogenic model
Debasish Borah, P. S. Bhupal Dev, Abhass Kumar
We consider the scotogenic model, where the standard model (SM) is extended by a scalar doublet and three odd SM-singlet fermions (, ), all odd under an additio…
Inflation and Dark Matter in the Inert Doublet Model
Sandhya Choubey, Abhass Kumar
We discuss inflation and dark matter in the inert doublet model coupled non-minimally to gravity where the inert doublet is the inflaton and the neutral scalar part of the doublet…
On the smoothness of multi center coplanar black hole and membrane horizons
Chethan N. Gowdigere, Abhass Kumar, Himanshu Raj +1
We study the differentiability of the metric and other fields at any of the horizons of multi center Reissner-Nordstrom black hole solutions in and of multi center b…