Random-matrix perspective on many-body entanglement with a finite localization length
arXiv:1910.12082 · doi:10.1103/PhysRevResearch.2.032010
Abstract
We provide a simple and predictive random-matrix framework that naturally generalizes Page's law for ergodic many-body systems by incorporating a finite entanglement localization length. By comparing a highly structured one-dimensional model to a completely unstructured model and a physical system, we uncover a remarkable degree of universality, suggesting that the effective localization length is a universal combination of model parameters up until it drops down to the microscopic scale.
6 pages, 3 figures
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