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相关论文: Observation of multifractality in Anderson localiz…

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We expose two scenarios for the breakdown of quantum multifractality under the effect of perturbations. In the first scenario, multifractality survives below a certain scale of the quantum fluctuations. In the other one, the fluctuations of…

混沌动力学 · 物理学 2014-06-16 R. Dubertrand , I. García-Mata , B. Georgeot , O. Giraud , G. Lemarié , J. Martin

We study the transport of classical waves through three-dimensional (3D) anisotropic media close to the Anderson localization transition. Time-, frequency-, and position-resolved ultrasonic measurements are performed on anisotropic…

无序系统与神经网络 · 物理学 2021-01-04 Antton Goïcoechea , Sergey E. Skipetrov , John H. Page

Here I provide additional experimental information and criticise the analysis, modelling, interpretation and claims presented in the recent paper [Nature Communications 11, 4942 (2020)]. I argue that the authors have no clear experimental…

量子气体 · 物理学 2021-12-28 Sophie S. Shamailov

We consider Anderson localization and the associated metal-insulator transition for non-interacting fermions in D = 1, 2 space dimensions in the presence of spatially correlated on-site random potentials. To assess the nature of the…

无序系统与神经网络 · 物理学 2014-08-05 Eric C. Andrade , Mark Steudtner , Matthias Vojta

We review recent works that relate entanglement of random vectors to their localization properties. In particular, the linear entropy is related by a simple expression to the inverse participation ratio, while next orders of the entropy of…

量子物理 · 物理学 2015-05-13 O. Giraud , J. Martin , B. Georgeot

We introduce a class of models containing robust and analytically demonstrable multifractality induced by disorder correlations. Specifically, we investigate the statistics of eigenstates of disordered tight-binding models on two classes of…

无序系统与神经网络 · 物理学 2025-11-27 David E. Logan , Sthitadhi Roy

We consider a disordered one-dimensional tight-binding model with power-law decaying hopping amplitudes to disclose wavefunction maximum distributions related to the Anderson localization phenomenon. Deeply in the regime of extended states,…

无序系统与神经网络 · 物理学 2022-11-30 P. R. N. Falcão , M. L. Lyra

At Anderson critical points, the statistics of the two-point transmission $T_L$ for disordered samples of linear size $L$ is expected to be multifractal with the following properties [Janssen {\it et al} PRB 59, 15836 (1999)] : (i) the…

无序系统与神经网络 · 物理学 2009-05-28 Cecile Monthus , Thomas Garel

We present a numerical study of electromagnetic wave transport in disordered quasi-one-dimensional waveguides at terahertz frequencies. Finite element method calculations of terahertz wave propagation within LiNbO$_{3}$ waveguides with…

光学 · 物理学 2014-02-21 C. P. Lapointe , P. Zakharov , F. Enderli , T. Feurer , S. E. Skipetrov , F. Scheffold

The tight-binding model for a chain, where the hopping constants follow a Fibonacci sequence, predicts multifractality in the spectrum and wavefunctions. Experimentally, we realize this model by chains of small dielectric resonators with…

无序系统与神经网络 · 物理学 2023-08-28 Mattis Reisner , Yanel Tahmi , Frédéric Piéchon , Ulrich Kuhl , Fabrice Mortessagne

We study Anderson localization of ultracold atoms in weak, one-dimensional speckle potentials, using perturbation theory beyond Born approximation. We show the existence of a series of sharp crossovers (effective mobility edges) between…

We consider highly heterogeneous random networks with symmetric interactions in the limit of high connectivity. A key feature of this system is that the spectral density of the corresponding ensemble exhibits a divergence within the bulk.…

无序系统与神经网络 · 物理学 2023-11-29 Diego Tapias , Peter Sollich

We establish strong dynamical localization for a class of multi-particle Anderson models in a Euclidean space with an alloy-type random potential and a sub-exponentially decaying interaction of infinite range. For the first time in the…

数学物理 · 物理学 2014-07-18 Victor Chulaevsky

Electron localization property of a random chain changing under the influence of a constant electric field has been studied. We have adopted the multifractal scaling formalism to explore the possible localization behavior in the system. We…

无序系统与神经网络 · 物理学 2009-10-31 Parthapratim Biswas , Prabhat K Thakur

We investigate dynamical scaling properties of the 1D tight-binding Anderson model with a weak diagonal disorder, by means of the spreading of a wave packet. In the absence of disorder, and more generally in the ballistic regime, the…

无序系统与神经网络 · 物理学 2007-05-23 S. De Toro Arias , J. M. Luck

We consider the correlation of two single-particle probability densities $|\Psi_{E}({\bf r})|^{2}$ at coinciding points ${\bf r}$ as a function of the energy separation $\omega=|E-E'|$ for disordered tight-binding lattice models (the…

介观与纳米尺度物理 · 物理学 2010-10-29 E. Cuevas , V. E. Kravtsov

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

We consider the multi-particle Anderson model on the lattice with infinite range but sub-exponentially decaying interaction and show the Anderson localization consisting of the spectral exponential and the strong dynamical localization. In…

数学物理 · 物理学 2017-06-28 Trésor Ekanga

The scaling theory of Anderson localization is based on a global conductance $g_L$ that remains a random variable of order O(1) at criticality. One realization of such a conductance is the Landauer transmission for many transverse channels.…

无序系统与神经网络 · 物理学 2009-07-21 Cecile Monthus , Thomas Garel

We study the properties of the spinor wavefunction in a strongly disordered environment on a two-dimensional lattice. By employing a transfer-matrix calculation we find that there is a transition from delocalized to localized states at a…

无序系统与神经网络 · 物理学 2013-10-09 A. Hill , K. Ziegler