中文
相关论文

相关论文: Log it: How to fit an active Brownian particle's m…

200 篇论文

We propose a method for obtaining the intrinsic, long time mean square displacement (MSD) of atoms and molecules in proteins from finite time molecular dynamics (MD) simulations. Typical data from simulations are limited to times of 1 to 10…

生物物理 · 物理学 2015-06-17 Derya Vural , Liang Hong , Jeremy C. Smith , Henry R. Glyde

The conformational and dynamical properties of active self-propelled filaments/polymers are investigated in the presence of hydrodynamic interactions by both, Brownian dynamics simulations and analytical theory. Numerically, a discrete…

软凝聚态物质 · 物理学 2020-08-04 Aitor Martin-Gomez , Thomas Eisenstecken , Gerhard Gompper , Roland G. Winkler

We introduce jerky chiral active Brownian particles (jcABPs), a generalization of conventional chiral active Brownian particles (cABPs) subjected to jerk, the time derivative of acceleration, and analytically derive their mean displacement…

统计力学 · 物理学 2025-12-10 Stephy Jose , Hartmut Löwen

Many active particles are embedded in environments that exhibit viscoelastic properties. An important class of such media lacks a single characteristic relaxation timescale when subjected to a time-dependent stress. Rather, the stress…

软凝聚态物质 · 物理学 2025-12-24 David Santiago Quevedo , Monica Conte , Marjolein Dijkstra , Cristiane Morais Smith

In the present work, with the intent of exploring the out-of-equilibrium polymerization of active patchy particles in linear chains, we study a suspension of active bivalent Brownian particles (ABBPs). At all studied temperatures and…

软凝聚态物质 · 物理学 2024-11-19 Caterina Landi , John Russo , Francesco Sciortino , Chantal Valeriani

We generalize to stochastic dynamics the exact expression for average dissipation along an arbitrary non-equilibrium process, given in Phys. Rev. Lett. 98, 080602 (2007). We then derive lower bounds by various coarse-graining procedures and…

统计力学 · 物理学 2007-10-24 A. Gomez-Marin , J. M. R. Parrondo , C. Van den Broeck

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

We carry out a comprehensive linear stability analysis of active Brownian particle systems around a constant homogeneous state. These scalar models, being important prototypes for the continuous description of active matter, are…

偏微分方程分析 · 数学 2025-12-22 Michele Coti Zelati , Lucas Ertzbischoff , David Gerard-Varet

Advancements in artificial active matter heavily rely on our ability to characterise their motion. Yet, the most widely used tool to analyse the latter is standard wide-field microscopy, which is largely limited to the study of…

软凝聚态物质 · 物理学 2024-04-03 Maximilian Bailey , Fabio Grillo , Lucio Isa

Diffusion of Brownian particles in the tilted periodic potential, usually referred to the washboard potential (WBP), is a well-known model to describe physical systems out of equilibrium. Considering that the biological medium is flexible…

化学物理 · 物理学 2023-10-13 Yu Lu , Guo-Hui Hu

Self-propelled particles serve as minimal models for emulating the dynamic self-organization of microorganisms, yet most synthetic systems remain limited to a single mode of motion, namely active Brownian particles (ABPs). Here, we present…

Fractional Brownian motion is a Gaussian stochastic process with stationary, long-time correlated increments and is frequently used to model anomalous diffusion processes. We study numerically fractional Brownian motion confined to a finite…

统计力学 · 物理学 2019-03-22 T. Guggenberger , G. Pagnini , T. Vojta , R. Metzler

Small organisms (e.g., bacteria) and artificial microswimmers move due to a combination of active swimming and passive Brownian motion. Considering a simplified linear three-sphere swimmer, we study how the swimmer size regulates the…

软凝聚态物质 · 物理学 2010-10-13 Jörn Dunkel , Irwin M. Zaid

The mean square displacement (MSD) of intruders (tracer particles) immersed in a multicomponent granular mixture made up of smooth inelastic hard spheres in a homogeneous cooling state is explicitly computed. The multicomponent granular…

软凝聚态物质 · 物理学 2024-12-12 Rubén Gómez González , Santos Bravo Yuste , Vicente Garzó

Self-propelled Brownian particles show rich out-of-equilibrium physics, for instance, the motility-induced phase separation (MIPS). While decades of studying the structure of liquids have established a deep understanding of passive systems,…

软凝聚态物质 · 物理学 2018-01-17 Andreas Härtel , David Richard , Thomas Speck

We generalize the Green-Kubo approach, previously applied to bulk systems of spherically symmetric active particles [J. Chem. Phys. 145, 161101 (2016)], to include spatially inhomogeneous activity. The method is applied to predict the…

软凝聚态物质 · 物理学 2017-09-20 Abhinav Sharma , Joseph Brader

We propose a new overarching model for self-propelled particles that flexibly generates a full family of "descendants". The general dynamics introduced in this paper, which we denote as "parental" active model (PAM), unifies two special…

软凝聚态物质 · 物理学 2022-03-15 Lorenzo Caprini , Alexander Ralf Sprenger , Hartmut Löwen , René Wittmann

Self-propelled particles that are subject to noise are a well-established generic model system for active matter. A homogeneous alignment field can be used to orient the direction of the self-propulsion velocity and to model systems like…

统计力学 · 物理学 2024-03-06 Sameh Othman , Jiarul Midya , Thorsten Auth , Gerhard Gompper

We study analytically the dynamics of anisotropic active Brownian particles (ABPs), and more precisely their intermediate scattering function (ISF). To this end, we develop a systematic closure scheme for the moment expansion of their…

软凝聚态物质 · 物理学 2025-10-01 Timothée Gautry , Maxime Deforet , Pierre Illien

Active learning optimizes the exploration of large parameter spaces by strategically selecting which experiments or simulations to conduct, thus reducing resource consumption and potentially accelerating scientific discovery. A key…

机器学习 · 计算机科学 2024-05-20 Maxim Ziatdinov