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Many-body localization and delocalization in large quantum chains

TKM Institutsseminar

Vortragender:

Elmer Doggen

Datum:

15.11.2018 14:00

Ort:

Room 10.01, 10th Floor, Bldg. 30.23, KIT Campus South

Zugehörigkeit:

KIT

Gastgeber:

Prof. Dr. Alexander Mirlin

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