3 papers
gr-qc2025
EFT Corrections to Majumdar-Papapetrou Black Holes
Soham Acharya, Shuvayu Roy, Sudipta Sarkar
Recent studies on extremal black holes within effective field theories (EFT) of gravity have revealed an intriguing phenomenon: tidal forces near the horizon experience significant…
nucl-th2024
Relativistic fluid dynamics in a 'hydro' frame
Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy +1
In this letter, we investigate how field redefinition influences the spectrum of linearized perturbations in relativistic fluid dynamics. We show that the hydrodynamic modes do not…
hep-th2021
An entropy current and the second law in higher derivative theories of gravity
Sayantani Bhattacharyya, Prateksh Dhivakar, Anirban Dinda +3
We construct a proof of the second law of thermodynamics in an arbitrary diffeomorphism invariant theory of gravity working within the approximation of linearized dynamical fluctua…