165 citations · 2.7k across the 80 of their papers we have counts for
10 papers · 1 filter
Weak Ferromagnetism and Time-Stable Remanence in Hematite: Effect of Shape, Size and Morphology
Namrata Pattanayak, Arpan Bhattacharyya, Shruti Chakravarty +1
We have recently established that a number of Dzyaloshinskii-Moriya interaction driven canted antiferromagnets or weak ferrromagnets (WFM) including hematite exhibit an ultra-slow…
Post-Quench Evolution of Complexity and Entanglement in a Topological System
Tibra Ali, Arpan Bhattacharyya, S. Shajidul Haque +2
We investigate the evolution of complexity and entanglement following a quench in a one-dimensional topological system, namely the Su-Schrieffer-Heeger model. We demonstrate that c…
Time Evolution of Complexity: A Critique of Three Methods
Tibra Ali, Arpan Bhattacharyya, S. Shajidul Haque +2
In this work, we propose a testing procedure to distinguish between the different approaches for computing complexity. Our test does not require a direct comparison between the app…
Circuit complexity in interacting QFTs and RG flows
Arpan Bhattacharyya, Arvind Shekar, Aninda Sinha
We consider circuit complexity in certain interacting scalar quantum field theories, mainly focusing on the theory. We work out the circuit complexity for evolving from a nea…
Probing analytical and numerical integrability: The curious case of
Aritra Banerjee, Arpan Bhattacharyya
Motivated by recent studies related to integrability of string motion in various backgrounds via analytical and numerical procedures, we discuss these procedures for a well known i…
Notes on the Causal Structure in a Tensor Network
Arpan Bhattacharyya, Long Cheng, Ling-Yan Hung +2
In this paper we attempt to understand Lorentzian tensor networks, as a preparation for constructing tensor networks that can describe more exotic backgrounds such as black holes.…
Robustness of Topological Order in the Toric Code with Open Boundaries
Amit Jamadagni, Hendrik Weimer, Arpan Bhattacharyya
We analyze the robustness of topological order in the toric code in an open boundary setting in the presence of perturbations. The boundary conditions are introduced on a cylinder,…
Path-Integral Complexity for Perturbed CFTs
Arpan Bhattacharyya, Pawel Caputa, Sumit R. Das +3
In this work, we formulate a path-integral optimization for two dimensional conformal field theories perturbed by relevant operators. We present several evidences how this optimiza…
Measurement independent magnetocaloric effect in Mn-rich Mn-Fe-Ni-Sn(Sb/In) Heusler alloys
Arup Ghosh, Rajeev Rawat, Arpan Bhattacharyya +3
We report a systematic study on the magneto-structural transition in Mn-rich Fe-doped Mn-Fe-Ni-Sn(Sb/In) Heusler alloys by keeping the total valence electron concentration (e/a rat…
Entanglement of Purification in Free Scalar Field Theories
Arpan Bhattacharyya, Tadashi Takayanagi, Koji Umemoto
We compute the entanglement of purification (EoP) in a 2d free scalar field theory with various masses. This quantity measures correlations between two subsystems and is reduced to…