173 citations · 880 across the 33 of their papers we have counts for
3 papers · 1 filter
Viscosity to entropy ratio at extremality
Sayan K. Chakrabarti, Sachin Jain, Sudipta Mukherji
Assuming gauge theory realization at the boundary, we show that the viscosity to entropy ratio is 1/(4 pi) where the bulk is represented by a large class of extremal black holes in…
A new approach to modified-gravity models
Sayan K. Chakrabarti, Emmanuel N. Saridakis, Anjan A. Sen
We investigate f(R)-gravity models performing the ADM-slicing of standard General Relativity. We extract the static, spherically-symmetric vacuum solutions in the general case, whi…
Scalar field dynamics in warped AdS_3 black hole background
Sayan K. Chakrabarti, Pulak Ranjan Giri, Kumar S. Gupta
We study the normal modes of a scalar field in the background of a warped AdS_3 black hole which arises in topologically massive gravity. We discuss the normal mode spectrum using…