Internal clock of many-body delocalization

Abstract

For over two decades, researchers have investigated the effect of many-body interactions on Anderson localization. Early studies proposed many-body localization, i.e., strict particle confinement under strong disorder. Here, the authors challenge this notion by highlighting the prevalence of many-body delocalization in a fruit-fly model: the disordered Heisenberg chain. Its relaxation dynamics synchronize over various variables and parameters while adopting the entanglement entropy as an ``internal clock''. These results suggest entanglement evolution as a novel temporal measure for a nuanced understanding of relaxation dynamics.

Topics & Concepts