Abstract

We theoretically study the quench dynamics for an isolated Heisenberg spin chain with a random on-site magnetic field, which is one of the paradigmatic models of a many-body localization transition. Using a combination of matrix product state calculations and machine learning, we analyze transport and entanglement properties for chains up to length L = 100. We determine a lower bound for the critical disorder strength that is substantially higher than previous estimates based on smaller systems.

EVH Doggen et al., arXiv:1807.05051