23 citations · 43 across the 4 of their papers we have counts for
16 papers
Inducing supertranslations: The membrane picture
Avirup Ghosh
Dynamical evolution of black holes may be studied perturbatively in the membrane picture. We study the case of a body freely falling into a black hole, in the Rindler approximation…
Decaying fermionic warm dark matter and XENON1T electronic recoil excess
Koushik Dutta, Avirup Ghosh, Arpan Kar +1
In the light of the recently observed XENON1T electronic recoil (ER) data, we investigate the possibility of constraining the parameter space of a generic fermionic warm dark matte…
Dynamical horizons and Super-Translation transitions of the horizon
Ayan Chatterjee, Avirup Ghosh
A condition is defined which determines if a supertranslation is induced in the course of a general evolution from one isolated horizon phase to another via a dynamical horizon. Th…
Models of decaying FIMP Dark Matter: potential links with the Neutrino Sector
Laura Covi, Avirup Ghosh, Tanmoy Mondal +1
The absolute stability of a dark matter (DM) particle is not a binding requirement. Here we suggest a few scenarios where the DM particle is liable to decay via extremely feeble in…
Asymmetric dark matter from semi-annihilation
Avirup Ghosh, Deep Ghosh, Satyanarayan Mukhopadhyay
We show that a general semi-annihilation scenario, in which a pair of dark matter (DM) particles annihilate to an anti-DM, and an unstable state that can mix with or decay to stand…
On Super-Translation transition between Quasi-local Black holes
Amit Ghosh, Avirup Ghosh, Pritam Nanda
We re-explore the symmetries of a weakly isolated horizon (WIH) from the perspective of freedom in the choice of intrinsic data. The supertranslations are realized as additional sy…