Year: 2022
Type: article
Abstract: Quantum systems are typically ergodic and can be described by a thermal ensemble. In this work, the authors use large-scale tensor network numerics to investigate if a generic two-dimensional disordered Heisenberg model of quantum spins exhibits a nonergodic phase. They provide evidence for the existence of a many-body localized regime at sufficiently strong disorder. They also estimate the critical disorder strength where a crossover into an ergodic regime occurs and address finite-size effects.
Authors: K. S. C. Decker, D. M. Kennes, C. Karrasch
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Deutsche Forschungsgemeinschaft
OpenAlex ID: W3176010362