Multifractality and Fock-space localization in many-body localized states: One-particle density matrix perspective

arXiv: Disordered Systems and Neural Networks Pub Date : 2021-04-19 DOI:10.1103/PhysRevB.103.214206

Takahiro Orito, K. Imura

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引用次数: 5

Abstract

Many-body localization (MBL) is well characterized in Fock space. To quantify the degree of this Fock space localization, the multifractal dimension $D_q$ is employed; it has been claimed that $D_q$ shows a jump from the delocalized value $D_q=1$ in the ETH phase (ETH: eigenstate thermalization hypothesis) to a smaller value $0

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