63 citations · 243 across the 13 of their papers we have counts for
13 papers
Shockwaves in black hole microstate geometries
Bidisha Chakrabarty, Sami Rawash, David Turton
Gravitational solutions involving shockwaves have attracted significant recent interest in the context of black holes and quantum chaos. Certain classes of supersymmetric two-charg…
Phase Thermalization: from Fermi Liquid to Incoherent Metal
Pinaki Banerjee, Bidisha Chakrabarty, Swapnamay Mondal
When a system consists of a large subsystem (bath) and a small one (probe), thermalization implies induction of temperature of the bath onto the probe. If both the bath and the pro…
Open effective theory of scalar field in rotating plasma
Bidisha Chakrabarty, P. M. Aswin
We study the effective dynamics of an open scalar field interacting with a strongly-coupled two-dimensional rotating CFT plasma. The effective theory is determined by the real-time…
Quasinormal modes of supersymmetric microstate geometries from the D1-D5 CFT
Bidisha Chakrabarty, Debodirna Ghosh, Amitabh Virmani
We revisit the study of the probe scalar quasinormal modes of a class of three-charge supersymmetric microstate geometries. We compute the real and imaginary parts of the quasinorm…
Nonlinear Langevin dynamics via holography
Bidisha Chakrabarty, Joydeep Chakravarty, Soumyadeep Chaudhuri +3
In this work, we consider non-linear corrections to the Langevin effective theory of a heavy quark moving through a strongly coupled CFT plasma. In AdS/CFT, this system can be iden…
Out of time ordered effective dynamics of a quartic oscillator
Bidisha Chakrabarty, Soumyadeep Chaudhuri
We study the dynamics of a quantum Brownian particle weakly coupled to a thermal bath. Working in the Schwinger-Keldysh formalism, we develop an effective action of the particle up…
Out of Time Ordered Quantum Dissipation
Bidisha Chakrabarty, Soumyadeep Chaudhuri, R. Loganayagam
We consider a quantum Brownian particle interacting with two harmonic baths, which is then perturbed by a cubic coupling linking the particle and the baths. This cubic coupling ind…
On Late Time Tails in an Extreme Reissner-Nordström Black Hole: Frequency Domain Analysis
Srijit Bhattacharjee, Bidisha Chakrabarty, David D. K. Chow +2
In this brief note, we revisit the study of the leading order late time decay tails of massless scalar perturbations outside an extreme Reissner-Nordström black hole. Previous auth…
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…
On the Supersymmetry of Bianchi attractors in Gauged supergravity
Bidisha Chakrabarty, Karthik Inbasekar, Rickmoy Samanta
Bianchi attractors are near horizon geometries with homogeneous symmetries in the spatial directions. We construct supersymmetric Bianchi attractors in gauge…
Smooth non-extremal D1-D5-P solutions as charged gravitational instantons
Bidisha Chakrabarty, Jorge V. Rocha, Amitabh Virmani
We present an alternative and more direct construction of the non-supersymmetric D1-D5-P supergravity solutions found by Jejjala, Madden, Ross and Titchener. We show that these sol…
Holographic description of non-supersymmetric orbifolded D1-D5-P solutions
Bidisha Chakrabarty, David Turton, Amitabh Virmani
Non-supersymmetric black hole microstates are of great interest in the context of the black hole information paradox. We identify the holographic description of the general class o…
Geroch Group Description of Black Holes
Bidisha Chakrabarty, Amitabh Virmani
On one hand the Geroch group allows one to associate spacetime independent matrices with gravitational configurations that effectively only depend on two coordinates. This class in…