Work

Discrete disorder models for many-body localization

Year: 2018

Type: article

Abstract: Using exact diagonalization technique, we investigate the many-body localization phenomenon in the 1D Heisenberg chain comparing several disorder models. In particular we consider a family of discrete distributions of disorder strengths and compare the results with the standard uniform distribution. Both statistical properties of energy levels and the long time nonergodic behavior are discussed. The results for different discrete distributions are essentially identical to those obtained for the continuous distribution, provided the disorder strength is rescaled by the standard deviation of the random distribution. Only for the binary distribution significant deviations are observed.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.97.155133

Authors: Jakub Janarek, Dominique Delande, Jakub Zakrzewski

Institution: Jagiellonian University

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

Funders: Narodowe Centrum Nauki, Horizon 2020 Framework Programme

Awards: G3883453253, G5742018945