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We explore the critical properties of the localization transition in the non-Hermitian Aubry-Andre-Stark (AAS) model with quasiperiodic and Stark potentials, where the non-Hermiticity comes from the nonreciprocal hopping. The localization…

量子物理 · 物理学 2025-05-29 Ji-Long Dong , En-Wen Liang , Shi-Yang Liu , Guo-Qing Zhang , Ling-Zhi Tang , Dan-Wei Zhang

We study the stability of the topological phase in one-dimensional Su-Schrieffer-Heeger chain subject to the quasiperiodic hopping disorder. We investigate two different hopping disorder configurations, one is the Aubry-Andr\'{e}…

无序系统与神经网络 · 物理学 2018-10-08 Tong Liu , Hao Guo

We investigate the transition induced by disorder in a periodically-driven one-dimensional model displaying quantized topological transport. We show that, while instantaneous eigenstates are necessarily Anderson localized, the periodic…

无序系统与神经网络 · 物理学 2020-01-01 Matteo M. Wauters , Angelo Russomanno , Roberta Citro , Giuseppe E. Santoro , Lorenzo Privitera

Going beyond the currently investigated regimes in experiments on quantum transport of ultracold atoms in disordered potentials, we predict a crossover between regular and quantum-chaotic dynamics when varying the strength of disorder. Our…

无序系统与神经网络 · 物理学 2008-04-16 Pierfrancesco Buonsante , Sandro Wimberger

We study the existence of one-dimensional localized states supported by linear periodic potentials and a domain-wall-like Kerr nonlinearity. The model gives rise to several new types of asymmetric localized states, including single- and…

斑图形成与孤子 · 物理学 2019-09-24 Jincheng Shi , Jianhua Zeng

The self-averaging behavior of interacting many-body quantum systems has been mostly studied at equilibrium. The present work addresses what happens out of equilibrium, as the increase of the strength of onsite disorder takes the system to…

We analyze the localization properties of the disordered Hubbard model in the presence of a synthetic magnetic field. An analysis of level spacing ratio shows a clear transition from ergodic to many-body localized phase. The transition…

无序系统与神经网络 · 物理学 2021-01-08 Kuldeep Suthar , Piotr Sierant , Jakub Zakrzewski

We obtain approximate solutions defining the mobility edge separating localized and extended states for several classes of generic one-dimensional quasiperiodic models. We validate our analytical ansatz with exact numerical calculations.…

无序系统与神经网络 · 物理学 2023-06-30 DinhDuy Vu , Sankar Das Sarma

A mobility edge (ME) in energy separating extended from localized states is a central concept in understanding various fundamental phenomena like the metal-insulator transition in disordered systems. In one-dimensional quasiperiodic…

无序系统与神经网络 · 物理学 2021-05-26 Yucheng Wang , Xu Xia , Yongjian Wang , Zuohuan Zheng , Xiong-jun Liu

Lessons from Anderson localization highlight the importance of dimensionality of real space for localization due to disorder. More recently, studies of many-body localization have focussed on the phenomenon in one dimension using techniques…

无序系统与神经网络 · 物理学 2020-02-11 Thorsten B. Wahl , Arijeet Pal , Steven H. Simon

The population evolution of single excitation is studied in the Aubry- Andr\'{e}- Harper (AAH) model coupled to a $d (=1,2,3)$-dimensional simple lattices bath with a focus on the effect of localization in the system and the dimensionality…

量子物理 · 物理学 2021-11-23 H. T. Cui , M. Qin , L. Tang , H. Z. Shen , X. X. Yi

The isolated one-dimensional Heisenberg model with static random magnetic fields has become paradigmatic for the analysis of many-body localization. Here, we study the dynamics of this system initially prepared in a highly-excited…

无序系统与神经网络 · 物理学 2015-07-27 E. J. Torres-Herrera , Lea F. Santos

We study the quantum thermalization and information scrambling dynamics of an experimentally realizable quantum spin model with homogeneous XX-type all-to-all interactions and random local potentials. We identify the…

量子物理 · 物理学 2022-07-20 Shang-Shu Li , Rui-Zhen Huang , Heng Fan

We solve an adaptive search model where a random walker or L\'evy flight stochastically resets to previously visited sites on a $d$-dimensional lattice containing one trapping site. Due to reinforcement, a phase transition occurs when the…

统计力学 · 物理学 2017-10-11 Andrea Falcón-Cortés , Denis Boyer , Luca Giuggioli , Satya N. Majumdar

It has been widely believed that almost all states in one-dimensional (1d) disordered systems with short-range hopping and uncorrelated random potential are localized. Here, we consider the fate of these localized states by coupling between…

无序系统与神经网络 · 物理学 2024-03-19 Xiaoshui Lin , Ming Gong

The eigenstate thermalization hypothesis describes how most isolated many-body quantum systems reach thermal equilibrium. However, the hypothesis is violated by phenomena such as many-body localization and quantum many-body scars. In this…

无序系统与神经网络 · 物理学 2024-02-09 Michael Iversen , Jens H. Bardarson , Anne E. B. Nielsen

The large majority of topological phases in one dimensional many-body systems are known to inherit from the corresponding single-particle Hamiltonian. In this work, we go beyond this assumption and find a new example of topological order…

量子气体 · 物理学 2025-03-04 Ashirbad Padhan , Luca Barbiero , Tapan Mishra

We investigate a tight-binding electronic chain featuring diagonal and off-diagonal disorder, these being modelled through the long-range-correlated fractional Brownian motion. Particularly, by employing exact diagonalization methods, we…

无序系统与神经网络 · 物理学 2018-10-16 Guilherme M. A. Almeida , Caio V. C. Mendes , Marcelo L. Lyra , Francisco A. B. F. de Moura

The interplay between interactions and quenched disorder can result in rich dynamical quantum phenomena far from equilibrium, particularly when many-body localization prevents the system from full thermalization. With the aim of tackling…

无序系统与神经网络 · 物理学 2018-02-14 S. J. Thomson , M. Schiró

For short-ranged disordered quantum models in one dimension, the Many-Body-Localization is analyzed via the adaptation to the Many-Body context [M. Serbyn, Z. Papic and D.A. Abanin, PRX 5, 041047 (2015)] of the Thouless point of view on the…

无序系统与神经网络 · 物理学 2016-07-11 Cecile Monthus
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