165 citations · 2.7k across the 80 of their papers we have counts for
10 papers · 1 filter
CFT reconstruction of local bulk operators in half-Minkowski space
Arpan Bhattacharyya, Manas Dogra, Shubho R. Roy
We construct a holographic map that reconstructs massless fields (scalars, Maxwell field \& Fierz-Pauli field) in half-Minkowski spacetime in dimensions terms of smeared prim…
Krylov Complexity and Spectral Form Factor for Noisy Random Matrix Models
Arpan Bhattacharyya, S. Shajidul Haque, Ghadir Jafari +2
We study the spectral properties of two classes of random matrix models: non-Gaussian RMT with quartic and sextic potentials, and RMT with Gaussian noise. We compute and analyze th…
Probing astrophysical environment with eccentric extreme mass-ratio inspirals
Mostafizur Rahman, Shailesh Kumar, Arpan Bhattacharyya
The discovery of gravitational waves and black holes has started a new era of gravitational wave astronomy that allows us to probe the underpinning features of gravity and astrophy…
Gravitational Radiation from hyperbolic encounters in the presence of dark matter
Abhishek Chowdhuri, Rishabh Kumar Singh, Kaushik Kangsabanik +1
In this study, we look into binaries undergoing gravitational radiation during a hyperbolic passage. Such hyperbolic events can be a credible source of gravitational waves in futur…
Operator growth and Krylov Complexity in Bose-Hubbard Model
Arpan Bhattacharyya, Debodirna Ghosh, Poulami Nandi
We study Krylov complexity of a one-dimensional Bosonic system, the celebrated Bose-Hubbard Model. The Bose-Hubbard Hamiltonian consists of interacting bosons on a lattice, describ…
Quantum state complexity meets many-body scars
Sourav Nandy, Bhaskar Mukherjee, Arpan Bhattacharyya +1
Scar eigenstates in a many-body system refers to a small subset of non-thermal finite energy density eigenstates embedded into an otherwise thermal spectrum. This novel non-thermal…
Worldline effective field theory of inspiralling black hole binaries in presence of dark photon and axionic dark matter
Arpan Bhattacharyya, Saptaswa Ghosh, Sounak Pal
We investigate the correction to the potential that gives rise to the bound orbits and radiation from non-spinning inspiralling binary black holes in a dark matter environment cons…
Holographic complexity of Jackiw-Teitelboim gravity from Karch-Randall braneworld
Aranya Bhattacharya, Arpan Bhattacharyya, Ayan K. Patra
Recently, it has been argued in [1] that Jackiw-Teitelboim (JT) gravity can be naturally realized in the Karch-Randall braneworld in dimensions. Using the `complexity=volum…
A review on analytical studies in Gravitational Lensing
Abhishek Chowdhuri, Saptaswa Ghosh, Arpan Bhattacharyya
In this study, we review some current studies on Gravitational Lensing for black holes, mainly in the context of general relativity. We mainly focus on the analytical studies relat…
Circuit Complexity for Carrollian Conformal (BMS) Field Theories
Arpan Bhattacharyya, Poulami Nandi
We systematically explore the construction of Nielsen's circuit complexity to a non-Lorentzian field theory keeping in mind its connection with flat holography. We consider a 2d bo…