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복잡계 이론물리 연구단
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Multifractality of correlated two-particle bound states in quasiperiodic chains

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Title
Multifractality of correlated two-particle bound states in quasiperiodic chains
Author(s)
Diana Thongjaomayum; Sergej Flach; Alexei Andreanov
Subject
2 INTERACTING PARTICLES, ; INTERACTION-INDUCED DELOCALIZATION, ; LOCALIZATION, ; SYSTEM
Publication Date
2020-05
Journal
PHYSICAL REVIEW B, v.101, no.17, pp.174201
Publisher
AMER PHYSICAL SOC
Abstract
©2020 American Physical Society, 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
URI
https://pr.ibs.re.kr/handle/8788114/8617
DOI
10.1103/PhysRevB.101.174201
ISSN
2469-9950
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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