Many-body localization transition in large quantum spin chains: The mobility edge

Abstract

Thermalization of random-field Heisenberg spin chain is probed by time evolution of density correlation functions. Studying the impacts of average energies of initial product states on dynamics of the system, we provide arguments in favor of the existence of a mobility edge in the large system-size limit.

arXiv comment7+3 pages, 7+4 figures. Close to published version

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