A5058039649- Quantum many-body systems
- Quantum Information and Cryptography
- Landslides and related hazards
- Opinion Dynamics and Social Influence
- Adhesion, Friction, and Surface Interactions
- Quantum chaos and dynamical systems
- Quantum and electron transport phenomena
- Granular flow and fluidized beds
- Neural Networks and Reservoir Computing
University of Göttingen
2019
For the characterization of dynamics in quantum many-body systems question how information spreads and becomes distributed over constituent degrees freedom is fundamental interest. The delocalization under has been dubbed scrambling, out-of-time-order correlators were proposed to probe this behavior. In work we investigate time evolution tripartite as a natural operator-independent measure which quantifies what extent initially localized can be recovered only by global measurements. Studying...
The tripartite information is an observable-independent measure for scrambling and delocalization of information. Therefore one can expect that the a good indicator distinguishing between many-body localized delocalized regimes, which we confirm XXZ-chain in random field. Specifically, find signal spreads inside lightcone only grows logarithmically time regime similar to entanglement entropy. We also eventually reaches plateau with asymptotic value suppressed by strong disorder.