Multifractality of correlated two-particle bound states in quasiperiodic chains

Article

关键词: 2 INTERACTING PARTICLES;    INTERACTION-INDUCED DELOCALIZATION;    LOCALIZATION;    SYSTEM;   

DOI  :  10.1103/PhysRevB.101.174201

来源: SCIE

【 摘 要 】

We consider the quasiperiodic Aubry-Andre chain in the insulating regime with localized single-particle states. Adding local interaction leads to the emergence of extended correlated two-particle bound states. We analyze the nature of these states, including their multifractality properties. We use a projected Green function method to compute numerically participation numbers of eigenstates and analyze their dependence on the energy and the system size. We then perform a scaling analysis. We observe multifractality of correlated extended two-particle bound states, which we confirm independently through exact diagonalization.

【 授权许可】

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