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This paper is a complement to our earlier work \cite{BCSS10b}. With the help of the multi-scale analysis, we derive, from estimates obtained in \cite{BCSS10b}, dynamical localization for a multi-particle Anderson model in a Euclidean space…

数学物理 · 物理学 2010-07-23 Victor Chulaevsky , Anne Boutet de Monvel , Yuri Suhov

This paper develops a new method for analyzing nonlinear diffusion equations of porous--medium type with time-dependent growth rates, based on the \emph{localization of solutions} through an associated Bernoulli-type ordinary differential…

偏微分方程分析 · 数学 2026-03-17 Dragos-Patru Covei

We consider a random Schr\"odinger operator on the binary tree with a random potential which is the sum of a random radially symmetric potential, $Q_r$, and a random transversally periodic potential, $\kappa Q_t$, with coupling constant…

数学物理 · 物理学 2018-01-03 Richard Froese , Darrick Lee , Christian Sadel , Wolfgang Spitzer , Günter Stolz

We study the one photon scattering problem for a super cavity (SC) coupling with two two-level atoms. With atomic decay, we find a sudden drop in reflection at $\Delta=0$ for the two atoms in the node-antinode configuration but not in the…

量子物理 · 物理学 2017-05-24 Wei Zhu , Peng Zhang , D. L. Zhou

In this note, we study a continuous matrix-valued Anderson-type model. Both leading Lyapounov exponents of this model are proved to be positive and distincts for all energies in $(2,+\infty)$ except those in a discrete set, which leads to…

数学物理 · 物理学 2007-11-27 Boumaza Hakim

The spatial non-locality (dispersion) of the transport equations results in a nonlinear dependence of the voltage drop $U$ on the distance between the points of measuring. Therefore the results of the usual two-probe measurements of the…

无序系统与神经网络 · 物理学 2007-05-23 A. G. Groshev , S. G. Novokshonov

We introduce and analyze a model for the transport of particles or energy in extended lattice systems. The dynamics of the model acts on a discrete phase space at discrete times but has nonetheless some of the characteristic properties of…

数学物理 · 物理学 2015-06-12 Raphael Lefevere

We extend the theory of non-thermal fixed points to the case of anomalously slow universal scaling dynamics according to the sine-Gordon model. This entails the derivation of a kinetic equation for the momentum occupancy of the scalar field…

量子气体 · 物理学 2025-10-13 Philipp Heinen , Aleksandr N. Mikheev , Thomas Gasenzer

We consider the Anderson model with Bernoulli potential on the 3D lattice, and prove localization of eigenfunctions corresponding to eigenvalues near zero, the lower boundary of the spectrum. We follow the framework by Bourgain-Kenig and…

偏微分方程分析 · 数学 2021-03-16 Linjun Li , Lingfu Zhang

We study Anderson localization of a one-dimensional quantum droplet in a speckle-like potential employing the generalized Gross-Pitaevskii equation. We compute the droplet width, density profiles, diffusion exponent and coefficient, and the…

无序系统与神经网络 · 物理学 2025-12-09 Zohra Mehri , Abdeaali Boudjemaa

Diffusive transport is among the most common phenomena in nature [1]. However, as predicted by Anderson [2], diffusion may break down due to interference. This transition from diffusive transport to localization of waves should occur for…

无序系统与神经网络 · 物理学 2009-11-11 Martin Störzer , Peter Gross , Christof M. Aegerter , Georg Maret

We consider the spatiotemporal evolution of a wave packet in disordered nonlinear Schr\"odinger and anharmonic oscillator chains. In the absence of nonlinearity all eigenstates are spatially localized with an upper bound on the localization…

无序系统与神经网络 · 物理学 2015-05-13 Ch. Skokos , D. O. Krimer , S. Komineas , S. Flach

We present an extended microcanonical Lanczos method (MCLM) for a direct evaluation of the diffusion constant and its frequency dependence within the disordered Anderson model of noninteracting particles. The method allows to study systems…

强关联电子 · 物理学 2021-06-16 P. Prelovšek , J. Herbrych

We study weak localization effects in the ballistic regime as induced by man-made scatterers. Specular reflection of the electrons off these scatterers results into backscattered trajectories which interfere with their time-reversed path…

介观与纳米尺度物理 · 物理学 2009-10-31 K. L. Janssens , F. M. Peeters

We present the relativistic analogue of Anderson localization in one dimension. We use Dirac equation to calculate the transmission probability for a spin-$\frac{1}{2}$ particle incident upon a rectangular barrier. Using the transfer matrix…

无序系统与神经网络 · 物理学 2020-03-10 Abhay Mehta , Sandeep Joshi , Sudhir R. Jain

We numerically study the distribution function of the conductivity (transmission) in the one-dimensional tight-binding Anderson model in the region of fluctuation states. We show that while single parameter scaling in this region is not…

无序系统与神经网络 · 物理学 2009-11-07 L. I. Deych , M. V. Erementchouk , A. A. Lisyansky

Models which allow an explicit application to structurally modulated substances are reviewed within the frame of a symmetry-based approach starting from discrete lattice theory. Focus is set on models formulated in terms of local variables…

凝聚态物理 · 物理学 2007-05-23 Boris Neubert , Michel Pleimling , Rolf Siems

We develop a self-consistent theoretical approach to the dynamics of Anderson localization in open three-dimensional (3D) disordered media. The approach allows us to study time-dependent transmission and reflection, and the distribution of…

无序系统与神经网络 · 物理学 2007-05-23 S. E. Skipetrov , B. A. van Tiggelen

We study the dependence on the spatial dimensionality of different quantities relevant in the description of the Anderson transition by combining numerical calculations in a $3 \leq d \leq 6$ disordered tight binding model with theoretical…

无序系统与神经网络 · 物理学 2009-11-11 Antonio M. Garcia-Garcia , Emilio Cuevas

The propagation of a spherical wave through a two-dimensional random Lorentz gas composed of small fixed scatterers is studied. Inspired by the Mott problem (how an initially isotropic quantum wave can give rise to a single particle-like…

量子物理 · 物理学 2026-03-16 Baptiste Lorent , Jean-Marc Sparenberg , David Gaspard