165 citations · 2.7k across the 80 of their papers we have counts for
7 papers · 1 filter
Decoherence, Entanglement Negativity and Circuit Complexity for Open Quantum System
Arpan Bhattacharyya, Tanvir Hanif, S. Shajidul Haque +1
In this paper, we compare the saturation time scales for complexity, linear entropy and entanglement negativity for two open quantum systems. Our first model is a coupled harmonic…
Pseudo complexity of purification for free scalar field theories
Aranya Bhattacharya, Arpan Bhattacharyya, Sabyasachi Maulik
We compute the pseudo complexity of purification corresponding to the reduced transition matrices for free scalar field theories with an arbitrary dynamical exponent. We plot the b…
Bootstrapping the Kronig-Penney Model
Matthew J. Blacker, Arpan Bhattacharyya, Aritra Banerjee
Recently, bootstrap methods from conformal field theory have been adapted for studying the energy spectrum of various quantum mechanical systems. In this paper, we consider the app…
Disorder driven cluster glass state in a geometrically frustrated hexagonal perovskite
Shruti Chakravarty, Øystein Slagtern Fjellvåg, Arpan Bhattacharyya +2
We report the observation of cluster glass-like properties in a double perovskite ruthenate BaCoRuO through structural (neutron and synchrotron X-ray diffraction), magnetic…
From CFTs to theories with Bondi-Metzner-Sachs symmetries: Complexity and out-of-time-ordered correlators
Aritra Banerjee, Arpan Bhattacharyya, Priya Drashni +1
We probe the contraction from relativistic CFTs to theories with Bondi-Metzner-Sachs (BMS) symmetries, or equivalently Conformal Carroll symmetries, using diagnostics of quant…
Study of eccentric binaries in Horndeski theory
Abhishek Chowdhuri, Arpan Bhattacharyya
We study the orbital evolution of eccentric binary systems in Horndeski gravity. This particular theory provides a testbed to give insightful comparisons with data. We compute the…
Complexity of warped conformal field theory
Arpan Bhattacharyya, Gaurav Katoch, Shubho R. Roy
Warped conformal field theories in two dimensions are exotic nonlocal, Lorentz violating field theories characterized by Virasoro-Kac-Moody symmetries and have attracted a lot of a…