165 citations · 2.7k across the 80 of their papers we have counts for
8 papers · 1 filter
Universal Local Operator Quenches and Entanglement Entropy
Arpan Bhattacharyya, Tadashi Takayanagi, Koji Umemoto
We present a new class of local quenches described by mixed states, parameterized universally by two parameters. We compute the evolutions of entanglement entropy for both a hologr…
Towards the Web of Quantum Chaos Diagnostics
Arpan Bhattacharyya, Wissam Chemissany, S. Shajidul Haque +1
We study the connections between three quantities that can be used as diagnostics for quantum chaos, i.e., the out-of-time-order correlator (OTOC), Loschmidt echo (LE), and complex…
Investigations of the heterometallic Ludwigite NiAlBO
Jitender Kumar, Deepak John Mukkattukavil, Arpan Bhattacharyya +1
We present magnetic, thermodynamic, dielectric and structural investigations on the aluminoborate NiAlBO, belonging to the ludwigite family. Room temperature structural…
Renormalized Circuit Complexity
Arpan Bhattacharyya, Pratik Nandy, Aninda Sinha
We propose a modification to Nielsen's circuit complexity for Hamiltonian simulation using the Suzuki-Trotter (ST) method, which provides a network like structure for the quantum c…
Chaos and Complexity in Quantum Mechanics
Tibra Ali, Arpan Bhattacharyya, S. Shajidul Haque +3
We propose a new diagnostic for quantum chaos. We show that time evolution of complexity for a particular type of target state can provide equivalent information about the classica…
Memory Effect and BMS-like Symmetries for Impulsive Gravitational Waves
Srijit Bhattacharjee, Arpan Bhattacharyya, Shailesh Kumar
Cataclysmic astrophysical phenomena can produce impulsive gravitational waves that can possibly be detected by the advanced versions of present-day detectors in the future. Gluing…
Entanglement Entropy for deformed CFT in general dimensions
Aritra Banerjee, Arpan Bhattacharyya, Soumangsu Chakraborty
We consider deformation of a generic dimensional () large- CFT on a sphere by a spin-0 operator which is bilinear in the components of the stress tensor. Such a def…
Entanglement of Purification in Many Body Systems and Symmetry Breaking
Arpan Bhattacharyya, Alexander Jahn, Tadashi Takayanagi +1
We study the entanglement of purification (EoP), a measure of total correlation between two subsystems and , for free scalar field theory on a lattice and the transverse-fie…