24 citations · 97 across the 13 of their papers we have counts for
13 papers
A comparison of two constructions for dynamical corrections to Wald entropy
Sayantani Bhattacharyya, Parthajit Biswas, Nilay Kundu
In this work, we analyze the differences and similarities between two recent constructions, which are distinct in their methodologies for extending the Wald entropy of stationary b…
Zeroth law of black hole thermodynamics for higher derivative Proca theories
Parthajit Biswas, Alokananda Kar, Anowar Shaikh
We prove the constancy of surface gravity across a Killing horizon (not necessarily of bifurcate type) in arbitrary higher curvature theories of gravity coupled to Proca fields …
Moving Mirrors, OTOCs and Scrambling
Parthajit Biswas, Bobby Ezhuthachan, Arnab Kundu +1
We explore the physics of scrambling in the moving mirror models, in which a two-dimensional CFT is subjected to a time-dependent boundary condition. It is well-known that by choos…
A classical Bousso bound for higher derivative corrections to general relativity
Sayantani Bhattacharyya, Parthajit Biswas, Nilay Kundu
Focussing on theories for which the higher derivative terms are considered as small corrections in the Lagrangian to Einstein's two-derivative theory of general relativity (GR), we…
Moving Interfaces and two-dimensional Black Holes
Parthajit Biswas, Suchetan Das, Anirban Dinda
Conformal field theories can exchange energy through a boundary interface. Imposing conformal boundary conditions for static interfaces implies energy conservation at the interface…
Holographic entanglement entropy for relativistic hydrodynamic flows
Jyotirmoy Bhattacharya, Parthajit Biswas, A. Chandranathan +1
We study the behaviour of holographic entanglement entropy (HEE) in near equilibrium thermal states which are macroscopically described by conformal relativistic hydrodynamic flows…
Non-minimal coupling of scalar and gauge fields with gravity: an entropy current and linearized second law
Parthajit Biswas, Prateksh Dhivakar, Nilay Kundu
This work extends the proof of a local version of the linearized second law involving an entropy current with non-negative divergence by including the arbitrary non-minimal couplin…
The zeroth law of black hole thermodynamics in arbitrary higher derivative theories of gravity
Sayantani Bhattacharyya, Parthajit Biswas, Anirban Dinda +1
We consider diffeomorphism invariant theories of gravity with arbitrary higher derivative terms in the Lagrangian as corrections to the leading two derivative theory of Einstein's…
Stress Tensor for Large- membrane at subleading orders
Parthajit Biswas
In this note, we have extended the result of \citep{radiation} to calculate the membrane stress tensor up to localized on the codimension-one mem…
Fluid-gravity and membrane-gravity dualities - Comparison at subleading orders
Sayantani Bhattacharyya, Parthajit Biswas, Anirban Dinda +1
In this note we have compared two different perturbation techniques that could be used to generate solutions of Einstein's equations in presence of negative cosmological constant.…
A leading-order comparison between fluid-gravity and membrane-gravity dualities
Sayantani Bhattacharyya, Parthajit Biswas, Milan Patra
In this note, we have compared two different perturbation techniques that are used to generate dynamical black-brane solutions to Einstein equation in presence of negative cosmolog…
Black holes in presence of cosmological constant: Second order in 1/D
Sayantani Bhattacharyya, Parthajit Biswas, Yogesh Dandekar
We have extended the results of arXiv:1704.06076 upto second subleading order in an expansion around large dimension D. Unlike the previous case, there are non-trivial metric corre…
The large D black hole dynamics in AdS/dS backgrounds
Sayantani Bhattacharyya, Parthajit Biswas, Bidisha Chakrabarty +2
We have constructed a class of perturbative dynamical black hole solutions in presence of cosmological constant. We have done our calculation in large number of dimensions. The inv…