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Brownian particles in random potentials show an extended regime of subdiffusive dynamics at intermediate times. The asymptotic diffusive behavior is often established at very long times and thus cannot be accessed in experiments or…

软凝聚态物质 · 物理学 2014-05-22 Richard D. L. Hanes , Michael Schmiedeberg , Stefan U. Egelhaaf

We consider an overdamped Brownian particle, exposed to a two-dimensional, square lattice potential and a rectangular ac-drive. Depending on the driving amplitude, the linear response to a weak dc-force along a lattice symmetry axis consist…

统计力学 · 物理学 2009-11-13 D. Speer , R. Eichhorn , P. Reimann

In this work, we report a new method to simulate active Brownian particles (ABPs) in molecular dynamics (MD) simulations. Immersed in a fluid, each ABP consists of a head particle and a spherical phantom region of fluid where the flagellum…

软凝聚态物质 · 物理学 2019-02-15 Liya Wang , Xinpeng Xu , Zhigang Li , Tiezheng Qian

We investigate the transport of interacting active run-and-tumble particles moving under an external drift force through a periodic array of obstacles for increasing drive amplitudes. For high activity where the system forms a motility…

软凝聚态物质 · 物理学 2024-04-23 C. Reichhardt , C. J. O. Reichhardt

We study the transport of active Brownian particles (ABPs) in three-dimensional (3D) oscillatory geometries, which are spatially periodic. We establish a generalized Fick-Jacobs approach, which reduces a 3D system to an effective 1D system…

软凝聚态物质 · 物理学 2025-09-16 Rahul Sinha , Ankit Gupta , P. S. Burada

We study the long-time behavior of underdamped Brownian particle moving through a viscous medium and in a systematic potential, when it is subjected to a space-dependent high-frequency periodic force. When the frequency is very large, much…

统计力学 · 物理学 2009-11-11 Malay Bandyopadhyay , Sushanta Dattagupta , Monamie Sanyal

We analytically investigate the dynamic behavior of an an-isotropic active Brownian particle under various stochastic resetting protocols in two dimensions. The motion of shape-asymmetric active Brownian particles in two dimensions leads to…

统计力学 · 物理学 2025-11-26 Anirban Ghosh , Sudipta Mandal , Subhasish Chaki

Diffusive transport of particles or, more generally, small objects is a ubiquitous feature of physical and chemical reaction systems. In configurations containing confining walls or constrictions transport is controlled both by the…

统计力学 · 物理学 2009-01-22 P. Sekhar Burada , Peter Hanggi , Fabio Marchesoni , Gerhard Schmid , Peter Talkner

We present mathematically rigorous expressions for the residence-time and first-passage-time distributions of a periodically forced Brownian particle in a bistable potential. For a broad range of forcing frequencies and amplitudes, the…

无序系统与神经网络 · 物理学 2007-05-23 Nils Berglund , Barbara Gentz

In this paper, a comprehensive examination of the temperature- and bias-dependent diffusion regimes of underdamped Brownian particles is presented. A temperature threshold for a transition between anomalous and normal diffusive behaviors is…

统计力学 · 物理学 2021-11-16 Trey Jiron , Marygrace Prinster , Jarrod Schiffbauer

We study far from equilibrium transport of a periodically driven inertial Brownian particle moving in a periodic potential. As detected recently for a SQUID ratchet dynamics (Spiechowicz J. & Luczka J. Phys. Rev. E 91, 062104 (2015)), the…

统计力学 · 物理学 2016-12-07 Jakub Spiechowicz , Peter Hänggi , Jerzy Łuczka

We consider the motion of a overdamped Brownian particle in periodic asymmetric potential with space dependent friction coefficient. In the presence of external time periodic forcing, the system shows multiple current reversals on varying…

统计力学 · 物理学 2007-05-23 Debasis Dan , A. M. Jayannavar , Mangal C. Mahato

The nonintegrable Hamiltonian dynamics of particles placed in a symmetric, spatially periodic potential and subjected to a periodically varying field is explored. Such systems can exhibit a rich diversity of unusual transport features. In…

混沌动力学 · 物理学 2008-07-10 D. Hennig , L. Schimansky-Geier , P. Hänggi

The mobility of an overdamped particle, in a periodic potential tilted by a constant external field and moving in a medium with periodic friction coefficient is examined. When the potential and the friction coefficient have the same…

统计力学 · 物理学 2009-10-31 Debasis Dan , Mangal C. Mahato , A. M. Jayannavar

We numerically investigate the transport of a suspended overdamped Brownian particle which is driven through a two-dimensional rectangular array of circular obstacles with finite radius. Two limiting cases are considered in detail, namely,…

化学物理 · 物理学 2012-01-06 P. K. Ghosh , P. Hanggi , F. Marchesoni , S. Martens , F. Nori , L. Schimansky-Geier , G. Schmid

Active Brownian particles (ABPs) are termed out to be a successful way of modeling the moving microorganism on the substrate. In recent studies, it is shown that such organisms can sense the characteristics of the substrate. Motivated by…

软凝聚态物质 · 物理学 2023-10-31 Pawan Kumar Mishra , Ajeya Krishna , Shradha Mishra

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

Active and diffusive motion in Brownian particles are regularly observed in fluidic environments, albeit at different time scales. Here, we experimentally study the dynamics of highly asymmetric microclusters trapped in air employing…

光学 · 物理学 2025-04-01 Anita Pahi , Kirty Ranjan Sahoo , Biswajit Das , Shuvojit Paul , Ayan Banerjee

The motion of overdamped particles in a one-dimensional spatially-periodic potential is considered. The potential is also randomly-fluctuating in time, due to multiplicative colored noise terms, and has a deterministic tilt. Numerical…

统计力学 · 物理学 2013-06-06 James P. Gleeson

A system reservoir model, where the associated reservoir is modulated by an external colored random force, is proposed to study the transport of an overdamped Brownian particle in a periodic potential. We then derive the analytical…

软凝聚态物质 · 物理学 2009-01-01 Jyotipratim Ray Chaudhuri , Suman Kumar Banik , Sudip Chattopadhyay , Pinaki Chaudhury