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相关论文: Noise-Induced Order in Extended Systems: A Tutoria…

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We investigate the effects of a time-correlated noise on an extended chaotic system. The chosen model is the Lorenz'96, a kind of "toy" model used for climate studies. Through the analysis of the system's time evolution and its time and…

混沌动力学 · 物理学 2009-11-13 Jorge A. Revelli , Miguel A. Rodriguez , Horacio S. Wio

We discuss intrinsic noise effects in stochastic multiplicative-noise partial differential equations, which are qualitatively independent of the noise interpretation (Ito vs. Stratonovich), in particular in the context of noise-induced…

统计力学 · 物理学 2009-11-10 O. Carrillo , M. Ibanes , J. Garcia-Ojalvo , J. Casademunt , J. M. Sancho

We investigate the effects of a time-correlated noise on an extended chaotic system. The chosen model is the Lorenz'96, a kind of toy model used for climate studies. The system is subjected to both temporal and spatiotemporal perturbations.…

混沌动力学 · 物理学 2007-07-18 Jorge A. Revelli , Miguel A. Rodriguez , Horacio S. Wio

Fluctuations play a central role in many fields of physics, from quantum electrodynamics to statistical mechanics. In active matter physics, most models focus on thermal fluctuations due to a surrounding solvent. An alternative but much…

软凝聚态物质 · 物理学 2025-04-17 Sebastian Fehlinger , Kai Cui , Arooj Sajjad , Heinz Koeppl , Benno Liebchen

The effect of thermally generated bulk stochastic forces on the statistical growth dynamics of forwards bifurcating propagating macroscopic patterns is compared with the influence of fluctuations at the boundary of a semiinfinite system,…

patt-sol · 物理学 2009-10-30 M. Luecke , A. Szprynger

We study the role of fluctuations in particle systems modeled by Dean-Kawasaki-type equations, which describe the evolution of particle densities in systems with Brownian motion. By comparing microscopic simulations, stochastic partial…

统计力学 · 物理学 2026-04-16 Nathan O. Silvano , Emilio Hernández-García , Cristóbal López

Fluctuations and noise may alter the behavior of dynamical systems considerably. For example, oscillations may be sustained by demographic fluctuations in biological systems where a stable fixed point is found in the absence of noise. We…

适应与自组织系统 · 物理学 2009-11-13 Richard P. Boland , Tobias Galla , Alan J. McKane

We consider stochastic dynamical systems defined by differential equations with a uniform random time delay. The latter equations are shown to be equivalent to deterministic higher-order differential equations: for an $n$-th order equation…

统计力学 · 物理学 2011-10-11 P. L. Krapivsky , J. M. Luck , K. Mallick

This article studies typical dynamics and fluctuations for a slow-fast dynamical system perturbed by a small fractional Brownian noise. Based on an ergodic theorem with explicit rates of convergence, which may be of independent interest, we…

概率论 · 数学 2020-08-20 Solesne Bourguin , Siragan Gailus , Konstantinos Spiliopoulos

We study the effects of time and space correlations of an external additive colored noise on the steady-state behavior of a Time-Dependent Ginzburg-Landau model. Simulations show the existence of nonequilibrium phase transitions controlled…

凝聚态物理 · 物理学 2009-10-22 Jordi Garcia-Ojalvo , Jose M. Sancho

Effect of noise in inducing order on various chaotically evolving systems is reviewed, with special emphasis on systems consisting of coupled chaotic elements. In many situations it is observed that the uncoupled elements when driven by…

chao-dyn · 物理学 2015-06-24 Manojit Roy , R. E. Amritkar

System-environment interactions are intrinsically nonlinear and dependent on the interplay between many degrees of freedom. The complexity may be even more pronounced when one aims to describe biologically motivated systems. In that case,…

统计力学 · 物理学 2014-07-07 L. A. da Silva , E. H. Colombo , C. Anteneodo

According to empirical observations, some pattern formation phenomena in driven many-particle systems are more pronounced in the presence of a certain noise level. We investigate this phenomenon of fluctuation-driven ordering with a…

统计力学 · 物理学 2009-11-07 Dirk Helbing , Tadeusz Platkowski

We present recent results on noise-induced transitions in a nonlinear oscillator with randomly modulated frequency. The presence of stochastic perturbations drastically alters the dynamical behaviour of the oscillator: noise can wash out a…

混沌动力学 · 物理学 2009-11-13 Sebastien Aumaitre , Francois Petrelis , Kirone Mallick

Self-organization through noisy interactions is ubiquitous across physics, mathematics, and machine learning, yet how long-range structure emerges from local noisy dynamics remains poorly understood. Here, we investigate three paradigmatic…

软凝聚态物质 · 物理学 2026-03-31 Satyam Anand , Guanming Zhang , Stefano Martiniani

We propose a stochastic modification of the Schr\"{o}dinger-Newton equation which takes into account the effect of extrinsic spacetime fluctuations. We use this equation to demonstrate gravitationally induced decoherence of two gaussian…

量子物理 · 物理学 2017-05-24 Sayantani Bera , Priyanka Giri , Tejinder P. Singh

In many instances, the dynamical richness and complexity observed in natural phenomena can be related to stochastic drives influencing their temporal evolution. For example, random noise allied to spatial asymmetries may induce…

统计力学 · 物理学 2023-10-03 K. S. Fa , C. -L. Ho , Y. B. Matos , M. G. E da Luz

The unpredictability in chaotic scattering problems is a fundamental topic in physics that has been studied either in purely conservative systems or in the presence of weak perturbations. In many systems noise plays an important role in the…

混沌动力学 · 物理学 2021-07-14 Alexandre R. Nieto , Jesús M. Seoane , Miguel A. F. Sanjuán

ABBREVIATED ABSTRACT: This paper summarises an investigation of the effects of weak friction and noise in time-independent, nonintegrable potentials which admit both regular and stochastic orbits. The aim is to understand the qualitative…

天体物理学 · 物理学 2009-10-22 Salman Habib , Henry E. Kandrup , M. Elaine Mahon

In this paper, we consider discrete-time non-linear stochastic dynamical systems with additive process noise in which both the initial state and noise distributions are uncertain. Our goal is to quantify how the uncertainty in these…

系统与控制 · 电气工程与系统科学 2025-05-19 Steven Adams , Eduardo Figueiredo , Luca Laurenti