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In active matter systems, deformable boundaries provide a mechanism to organize internal active stresses and perform work on the external environment. To study a minimal model of such a system, we perform particle-based simulations of an…

软凝聚态物质 · 物理学 2022-01-05 Matthew S. E. Peterson , Aparna Baskaran , Michael F. Hagan

We present an experimental study of the kinetics of orbitally-shaken macroscopic particles confined to a two-dimensional bounded domain. Discounting the forcing action of the external periodic actuation, the particles show translational…

Point polarizable molecules at fixed spatial positions have solvable electrostatic properties in classical approximation, the most familiar being the Clausius-Mossotti (CM) formula. This paper generalizes the model and imagines various…

材料科学 · 物理学 2009-11-10 Philip B. Allen

In this paper we present a self-contained macroscopic description of diffusive systems interacting with boundary reservoirs and under the action of external fields. The approach is based on simple postulates which are suggested by a wide…

统计力学 · 物理学 2015-12-18 L. Bertini , A. De Sole , D. Gabrielli , G. Jona-Lasinio , C. Landim

We study the temperature dependence of static and dynamic responses of Coulomb interacting particles in two-dimensional traps across the thermal crossover from an amorphous solid- to liquid-like behaviors. While static correlations, that…

无序系统与神经网络 · 物理学 2017-10-11 Biswarup Ash , J. Chakrabarti , Amit Ghosal

The flocking of self-propelled particles in heterogeneous environments is relevant to both natural and artificial systems. The Vicsek model is a canonical choice to investigate such systems due to the minimal number of parameters required…

计算物理 · 物理学 2024-12-11 Eighdi Aung , Nicole Abaid , James E. McClure

Driven non-equilibrium lattice models have wide-ranging applications in contexts such as mass transport, traffic flow, and transport in biological systems. In this work, we investigate the steady-state properties of a one-dimensional…

统计力学 · 物理学 2026-01-16 Swastik Majumder , Mustansir Barma

Quasisymmetry and omnigeneity of an equilibrium magnetic field are two distinct properties proposed to ensure radial localization of collisionless trapped particles in any stellarator. These constraints are incompletely explored, but have…

等离子体物理 · 物理学 2018-03-14 Wrick Sengupta , Harold Weitzner

Nonmagnetic spheres confined in a ferrofluid layer (magnetic holes) present dipolar interactions when an external magnetic field is exerted. The interaction potential of a microsphere pair is derived analytically, with a precise care for…

软凝聚态物质 · 物理学 2009-11-10 Renaud Toussaint , Jørgen Akselvoll , Eirik G. Flekkøy , Geir Helgesen , Arne T. Skjeltorp

It has been supposed that the interplay of elasticity and activity plays a key role in triggering the non-equilibrium behaviors in biological systems. However, the experimental model system is missing to investigate the spatiotemporally…

软凝聚态物质 · 物理学 2024-07-31 Tian-liang Xu , Chao-ran Qin , Bin Tang , Jin-cheng Gao , Jiankang Zhou , Kang Chen , Tian Hui Zhang , Wen-de Tian

We study a system of interacting active particles, propelled by colored noises, characterized by an activity time {\tau}, and confined by a single-well anharmonic potential. We assume pair-wise repulsive forces among particles, modelling…

统计力学 · 物理学 2018-10-31 Lorenzo Caprini , Umberto Marini Bettolo Marconi , Andrea Puglisi

Recent experimental breakthroughs in trapping, cooling and controlling ultracold gases of polar molecules, magnetic and Rydberg atoms have paved the way toward the investigation of highly tunable quantum systems, where anisotropic,…

量子气体 · 物理学 2015-02-11 M. A. Baranov , M. Dalmonte , G. Pupillo , P. Zoller

We study the nonequilibrium dynamics of two particles confined in two spatially separated harmonic potentials and linearly coupled to the same thermally fluctuating scalar field, a cartoon for optically trapped colloids in contact with a…

统计力学 · 物理学 2022-10-12 Davide Venturelli , Andrea Gambassi

This work investigates the effects of tangent polar activity on the conformational and dynamic properties of entangled polymer melts through Langevin molecular dynamics simulations. We examine systems composed of all self-propelled,…

软凝聚态物质 · 物理学 2024-11-19 Javier Oller-Iscar , Andrés R. Tejedor , Marisol Ripoll , Jorge Ramírez

We develop a dynamic mean-field theory for polar active particles that interact through a self-generated field, in particular one generated through emitting a chemical signal. While being a form of chemotactic response, it is different from…

统计力学 · 物理学 2020-01-15 Andreas Fischer , Friederike Schmid , Thomas Speck

We study systems of two identical dipolar particles confined in quasi one-dimensional harmonic traps. Numerical results for the dependencies of the entanglement on the control parameters of the systems are provided and discussed in detail.…

量子物理 · 物理学 2020-01-07 Przemyslaw Koscik

Active colloids belong to a class of non-equilibrium systems where energy uptake, conversion and dissipation occurs at the level of individual colloidal particles, which can lead to particles self-propelled motion and surprising collective…

软凝聚态物质 · 物理学 2022-09-14 T. C. Rebocho , M. Tasinkevych , C. S. Dias

Systems composed of strongly interacting self-propelled particles can form a spontaneously flowing polar active fluid. The study of the connection between the microscopic dynamics of a single such particle and the macroscopic dynamics of…

软凝聚态物质 · 物理学 2018-03-02 Benjamin Loewe , Anton Souslov , Paul M. Goldbart

We calculate the energy and wave functions of two particles confined to two spatial dimensions interacting via arbitrary anisotropic potentials with negative or zero net volume. The general rigorous analytic expressions are given in the…

量子物理 · 物理学 2011-06-21 A. G. Volosniev , D. V. Fedorov , A. S. Jensen , N. T. Zinner

We study an agent-based model of self-propelled particles with a velocity-dependent alignment rule. This interaction is orientation weighted and acts along the line connecting neighboring particles. Tuning the alignment strength produces…

软凝聚态物质 · 物理学 2026-05-19 Bohdan Dobosh , Alexander Yakimenko