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We study the long time behaviour of a nonlinear oscillator subject to a random multiplicative noise with a spectral density (or power-spectrum) that decays as a power law at high frequencies. When the dissipation is negligible, physical…

混沌动力学 · 物理学 2009-11-13 Kirone Mallick

The interplay between structure and dynamics in non-equilibrium steady-state is far from understood. We address this interplay by tracking Brownian Dynamics trajectories of particles in a binary colloid of opposite charges in an external…

软凝聚态物质 · 物理学 2016-12-08 Suman Dutta , J. Chakrabarti

Motivated to understand the asymptotic behavior of periodically driven thermodynamic systems, we study the prototypical example of Brownian particle, overdamped and underdamped, in harmonic potentials subjected to periodic driving. The…

统计力学 · 物理学 2020-05-12 Shakul Awasthi , Sreedhar B. Dutta

Correlation anisotropy emerges dynamically in magnetohydrodynamics (MHD), producing stronger gradients across the large-scale mean magnetic field than along it. This occurs both globally and locally, and has significant implications in…

空间物理 · 物理学 2013-12-04 W. H. Matthaeus , S. Servidio , P. Dmitruk , V. Carbone , S. Oughton , M. Wan , K. T. Osman

A one-component bistable reaction-diffusion system with asymmetric nonlocal coup ling is derived as limiting case of a two-component activator-inhibitor reaction -diffusion model with differential advection. The effects of asymmetric…

斑图形成与孤子 · 物理学 2014-05-20 Julien Siebert , Sergio Alonso , Markus Bär , Eckehard Schöll

The nonequilibrium short-time critical behaviors of driven and undriven lattice gases are investigated via Monte Carlo simulations in two spatial dimensions starting from a fully disordered initial configuration. In particular, we study the…

统计力学 · 物理学 2017-02-16 Urna Basu , Valerio Volpati , Sergio Caracciolo , Andrea Gambassi

By means of numerical simulations we study the radial-orbit instability in anisotropic self-gravitating $N-$body systems under the effect of noise. We find that the presence of additive or multiplicative noise has a different effect on the…

星系天体物理 · 物理学 2022-06-08 Pierfrancesco Di Cintio , Lapo Casetti

Evidence suggests that the transport rate of a passive particle at long timescales is enhanced due to interactions with the surrounding active ones in a size- and composition-dependent manner. Using a system of particles with different…

软凝聚态物质 · 物理学 2021-07-14 Efe Ilker , Michele Castellana , Jean-François Joanny

This work concerns with a class of chemotaxis models in which external sources, comprising nonlocal and gradient-dependent damping reactions, influence the motion of a cell density attracted by a chemical signal. The mechanism of the two…

偏微分方程分析 · 数学 2024-06-17 Rafael Díaz Fuentes , Silvia Frassu , Giuseppe Viglialoro

We reveal the intricate impact of nonlinearity and disorder on the thermal conductivity of acoustic chains. Disorder induces mobility edges and allows to control the amount of extended modes which are the ballistic channels for energy…

无序系统与神经网络 · 物理学 2010-09-20 M. V. Ivanchenko , S. Flach

We study the spatio-temporal spreading of correlations in an ensemble of spins due to dissipation characterized by short- and long-range spatial profiles. We consider systems initially in an uncorrelated state, and find that correlations…

量子气体 · 物理学 2022-05-25 Kushal Seetharam , Alessio Lerose , Rosario Fazio , Jamir Marino

We study the dynamics of nonequilibrium instabilities in anisotropically expanding systems. The most prominent example of such a system is the 'Glasma' in the context of relativistic heavy-ion collision experiments, where the expansion is a…

高能物理 - 唯象学 · 物理学 2013-05-30 Jürgen Berges , Kirill Boguslavski , Sören Schlichting

We aim to study thermodynamics of multiple two-body systems with long-range correlation using non-extensive statistics. Long-range correlation will cause multiple systems in anomalous diffusion. We consider the influence of long-range…

统计力学 · 物理学 2017-07-31 Luan Cheng , Huiqiang Ding , Furong Yan , Weining Zhang , Enke Wang

Disorder, noise and interaction play a crucial role in the transport properties of real systems, but they are typically hard to control and study both theoretically and experimentally, especially in the quantum case. Here we explore a…

量子气体 · 物理学 2013-09-12 C. D'Errico , M. Moratti , E. Lucioni , L. Tanzi , B. Deissler , M. Inguscio , G. Modugno , M. B. Plenio , F. Caruso

We have studied the non-Markovianity of dichotomously driven spin-boson model in the strong coupling regime in both memory kernel and time convolutionless master equation formulations. A strong correlation between the decay time of the…

量子物理 · 物理学 2018-10-31 Arzu Kurt , Resul Eryigit

We study a quasi-two-dimensional monolayer of granular rods fluidized by a spatially and temporally homogeneous upflow of air. By tracking the position and orientation of the particles, we characterize the dynamics of the system with…

软凝聚态物质 · 物理学 2010-11-03 L. J. Daniels , Y. Park , T. C. Lubensky , D. J. Durian

We have performed non-equilibrium dynamics simulations of a binary Lennard-Jones mixture in which an external force is applied on a single tagged particle. For the diffusive properties of this particle parallel to the force superdiffusive…

统计力学 · 物理学 2015-06-11 Carsten F. E. Schroer , Andreas Heuer

Many transport processes in nature exhibit anomalous diffusive properties with non-trivial scaling of the mean square displacement, e.g., diffusion of cells or of biomolecules inside the cell nucleus, where typically a crossover between…

统计力学 · 物理学 2015-09-16 Andrea Cairoli , Adrian Baule

Biological assemblies such as chromosomes, membranes, and the cytoskeleton are driven out of equilibrium at the nanoscale by enzymatic activity and molecular motors. Similar non-equilibrium dynamics can be realized in synthetic systems,…

生物物理 · 物理学 2020-06-04 Federica Mura , Grzegorz Gradziuk , Chase P. Broedersz

Starting from a general classical model of many interacting particles we present a well defined step by step procedure to derive the continuum-mechanics equations of nonlinear elasticity theory with fluctuations which describe the…

统计力学 · 物理学 2022-06-02 Rudolf Haussmann