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Power-law corrections to black-hole entropy via entanglement
Saurya Das, S. Shankaranarayanan, Sourav Sur
We consider the entanglement between quantum field degrees of freedom inside and outside the horizon as a plausible source of black-hole entropy. We examine possible deviations of…
Cosmological constant, brane tension and large hierarchy in a generalized Randall-Sundrum braneworld scenario
Saurya Das, Debaprasad Maity, Soumitra SenGupta
We consider a generalized Randall Sundrum (RS) brane world scenario with a cosmological constant induced on the visible brane. We show that for , resolution of the hierarc…
Where are the degrees of freedom responsible for black hole entropy?
Saurya Das, S. Shankaranarayanan, Sourav Sur
Considering the entanglement between quantum field degrees of freedom inside and outside the horizon as a plausible source of black hole entropy, we address the question: {\it wher…
Gravitational anomalies: a recipe for Hawking radiation
Saurya Das, Sean P. Robinson, Elias C. Vagenas
We explore the method of Robinson and Wilczek for deriving the Hawking temperature of a black hole. In this method, the Hawking radiation restores general covariance in an effectiv…
Power-law corrections to entanglement entropy of horizons
Saurya Das, S. Shankaranarayanan, Sourav Sur
We re-examine the idea that the origin of black-hole entropy may lie in the entanglement of quantum fields between inside and outside of the horizon. Motivated by the observation t…
Stability and hierarchy problems in string inspired braneworld scenarios
Saurya Das, Anindya Dey, Soumitra SenGupta
We generalise the RS braneworld model by taking into account a general stringy bulk containing the scalar dilaton field and the two-form Kalb-Ramond field, apart from gravity. Assu…