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It has been observed that the performances of many high-dimensional estimation problems are universal with respect to underlying sensing (or design) matrices. Specifically, matrices with markedly different constructions seem to achieve…

信息论 · 计算机科学 2023-07-24 Rishabh Dudeja , Subhabrata Sen , Yue M. Lu

Tracking the sign of fluctuations governed by the $(1+1)$-dimensional Kardar-Parisi-Zhang (KPZ) universality class, we show, both experimentally and numerically, that its evolution has an unexpected link to a simple stochastic model called…

统计力学 · 物理学 2016-08-17 Kazumasa A. Takeuchi , Takuma Akimoto

We review the application of field-theoretic renormalization group (RG) methods to the study of fluctuations in reaction-diffusion problems. We first investigate the physical origin of universality in these systems, before comparing RG…

统计力学 · 物理学 2007-05-23 Uwe C. Tauber , Martin Howard , Benjamin P. Vollmayr-Lee

We elucidate the universal spatio-temporal scaling properties of the time-dependent correlation functions in a class of two-component one-dimensional (1D) driven diffusive system that consists of two coupled asymmetric exclusion process. By…

统计力学 · 物理学 2024-06-17 Pritha Dolai , Aditi Simha , Abhik Basu

We compute the joint distribution of two consecutive eigenphase spacings and their ratio for Haar-distributed $\mathrm{U}(N)$ matrices (the circular unitary ensemble) using our framework for J\'{a}nossy densities in random matrix theory,…

数学物理 · 物理学 2025-07-29 Shinsuke M. Nishigaki

We prove uniform estimates for the decay rate of the Fourier transform of measures supported on real-analytic hypersurfaces in R^3. If the surface contains the origin and is oriented such that its normal at the origin is in the direction of…

经典分析与常微分方程 · 数学 2014-09-12 Michael Greenblatt

Experimentally, the phase of the amplitude for electron transmission through a quantum dot (transmission phase) shows the same pattern between consecutive resonances. Such universal behavior, found for long sequences of resonances, is…

混沌动力学 · 物理学 2014-05-26 Rodolfo A. Jalabert , Guillaume Weick , Hans A. Weidenmüller , Dietmar Weinmann

The asymptotic shape of randomly growing radial clusters is studied. We pose the problem in terms of the dynamics of stochastic partial differential equations. We concentrate on the properties of the realizations of the stochastic growth…

统计力学 · 物理学 2012-01-17 Carlos Escudero

The distribution function of the free energy fluctuations in one-dimensional directed polymers with $\delta$-correlated random potential is studied by mapping the replicated problem to a many body quantum boson system with attractive…

无序系统与神经网络 · 物理学 2015-05-18 Victor Dotsenko

We show numerically that the roughness and growth exponents of a wide range of rough surfaces, such as random deposition with relaxation (RDR), ballistic deposition (BD) and restricted solid-on-solid model (RSOS), are independent of the…

统计力学 · 物理学 2013-04-09 S. Hosseinabadi , M. A. Rajabpour , M. Sadegh Movahed , S. M. Vaez Allaei

We consider the isochrone curves in first-passage percolation on a 2D square lattice, i.e. the boundary of the set of points which can be reached in less than a given time from a certain origin. The occurrence of an instantaneous average…

We investigate growing interfaces of topological-defect turbulence in the electroconvection of nematic liquid crystals. The interfaces exhibit self-affine roughening characterized by both spatial and temporal scaling laws of the…

统计力学 · 物理学 2010-06-15 Kazumasa A. Takeuchi , Masaki Sano

We consider the asymptotic fluctuation behavior of the largest eigenvalue of certain sample covariance matrices in the asymptotic regime where both dimensions of the corresponding data matrix go to infinity. More precisely, let $X$ be an…

概率论 · 数学 2009-09-29 Noureddine El Karoui

The influence of a random environment on the dynamics of a fluctuating rough surface is investigated using a field theoretic renormalization group. The environment motion is modelled by the stochastic Navier--Stokes equation, which includes…

统计力学 · 物理学 2025-02-18 N. V. Antonov , A. A. Babakin , N. M. Gulitskiy , P. I. Kakin

We simulate competitive two-component growth on a one dimensional substrate of $L$ sites. One component is a Poisson-type deposition that generates Kardar-Parisi-Zhang (KPZ) correlations. The other is random deposition (RD). We derive the…

材料科学 · 物理学 2009-02-01 A. Kolakowska , M. A. Novotny , P. S. Verma

Based on dynamical renormalization group (RG) calculations to the one-loop order, the surface growth described by a nonlinear stochastic conserved growth equation, {\partial h \over \partial t} = \pm \nu_2 \nabla^2 h + \lambda\nabla \cdot…

凝聚态物理 · 物理学 2016-08-31 Youngkyun Jung , In-mook Kim , Yup Kim

Two-dimensional (2D) KPZ growth is usually investigated on substrates of lateral sizes $L_x=L_y$, so that $L_x$ and the correlation length ($\xi$) are the only relevant lengths determining the scaling behavior. However, in cylindrical…

统计力学 · 物理学 2024-05-06 Ismael S. S. Carrasco , Tiago J. Oliveira

The properties of a wide variety of growing models, generically called $X/RD$, are studied by means of numerical simulations and analytic developments. The study comprises the following $X$ models: Ballistic Deposition, Random Deposition…

统计力学 · 物理学 2009-11-11 Claudio M. Horowitz , Ezequiel V. Albano

The large-scale structure of the Universe is thought to evolve by a process of gravitational amplification from low-amplitude Gaussian noise generated in the early Universe. The later, non-linear stages of gravitation-induced clustering…

天体物理学 · 物理学 2009-11-07 Peter Watts , Peter Coles , Adrian Melott

Growth in crystals can be { usually } described by field equations such as the Kardar-Parisi-Zhang (KPZ) equation. While the crystalline structure can be characterized by Euclidean geometry with its peculiar symmetries, the growth dynamics…