31 citations · 77 across the 6 of their papers we have counts for
6 papers
Can Galileons cause violation of the second law of black hole thermodynamics?
Saugata Chatterjee
Galileons are stable null energy condition (NEC) violating perturbations. If these NEC violating modes are coupled to Einstein gravity, they can cause violation of the second law o…
On Coupling NEC-Violating Matter to Gravity
Saugata Chatterjee, Maulik Parikh, Jan Pieter van der Schaar
We show that effective theories of matter that classically violate the null energy condition cannot be minimally coupled to Einstein gravity without being inconsistent with both st…
A generalized equation of motion for gravity theories with non-minimal kinetic scalar couplings
Saugata Chatterjee
A general form for the equation of motion for higher-curvature gravity is obtained. The interesting feature of the analysis is that it can handle Lagrangians which contain non-mini…
The Second Law in 4D Einstein-Gauss-Bonnet Gravity
Saugata Chatterjee, Maulik Parikh
The topological contribution to black hole entropy of a Gauss-Bonnet term in four dimensions opens up the possibility of a violation of the second law of thermodynamics in black ho…
Energy Conditions in Jordan Frame
Saugata Chatterjee, Damien A. Easson, Maulik Parikh
The null energy condition, in its usual form, can appear to be violated by transformations in the conformal frame of the metric. We propose a generalization of the form of the null…
The Black Hole Membrane Paradigm in f(R) Gravity
Saugata Chatterjee, Maulik Parikh, Sudipta Sarkar
To an outside observer, a black hole's event horizon appears to behave exactly like a dynamical fluid membrane. We extend this membrane paradigm to black holes in general th…