131 citations · 406 across the 12 of their papers we have counts for
5 papers · 1 filter
Asymptotic Symmetries at Spatial Infinity
Sharad Mishra, Kinjal Banerjee, Jishnu Bhattacharyya
We describe asymptotic symmetries at spatial infinity of asymptotically flat spacetimes within the context of a generalization of the Beig-Schmidt-Ashtekar-Romano-framework. We dem…
de Sitterization via Kerr-Schild
Aditya Sharma, Kinjal Banerjee, Jishnu Bhattacharyya
Spatially homogeneous cosmological spacetimes, evolving in the presence of a positive cosmological constant and matter satisfying some reasonable energy conditions, typically appro…
Dynamical obstruction to perpetual motion from Lorentz-violating black holes
Robert Benkel, Jishnu Bhattacharyya, Jorma Louko +2
Black holes in Lorentz-violating theories have been claimed to violate the second law of thermodynamics by perpetual motion energy extraction. We revisit this question for a Penros…
Evolution and spherical collapse in Einstein-aether theory and Horava gravity
Jishnu Bhattacharyya, Andrew Coates, Mattia Colombo +1
We compare the initial value formulation of the low-energy limit of (non-projectable) Horava gravity to that of Einstein-aether theory when the aether is assumed to be hypersurface…
Causality and black holes in spacetimes with a preferred foliation
Jishnu Bhattacharyya, Mattia Colombo, Thomas P. Sotiriou
We develop a framework that facilitates the study of the causal structure of spacetimes with a causally preferred foliation. Such spacetimes may arise as solutions of Lorentz-viola…