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Friction is central to the motion of active (self-propelled) objects such as bacteria, animals, and robots. While in a viscous fluid friction is described by Stokes's law, objects in contact with other solid bodies are often governed by…

软凝聚态物质 · 物理学 2024-11-12 Alexander P. Antonov , Lorenzo Caprini , Anton Ldov , Christian Scholz , Hartmut Löwen

This article examines the spatial {dynamics of bed load particles} in water. We focus particularly on the fluctuations of particle activity, which is defined as the number of moving particles per unit bed {length}. Based on a stochastic…

地球物理 · 物理学 2016-11-15 J. Heyman , H. B. Ma , F. Mettra , C. Ancey

We study, numerically, the collective dynamics of self-rotating nonaligning particles by considering a monolayer of spheres driven by constant clockwise or counterclockwise torques. We show that hydrodynamic interactions alter the emergence…

软凝聚态物质 · 物理学 2016-03-24 Kyongmin Yeo , Enkeleida Lushi , Petia M. Vlahovska

The analysis of the statistical and dynamical fluctuations in nucleus-nucleus collisions on an event-by-event basis strongly relies on a comparison with specially constructed artificial events where statistical fluctuations and kinematical…

核实验 · 物理学 2007-05-23 Grazyna Odyniec

The structural properties of strongly coupled ions in dense plasmas with moderately to strongly degenerate electrons are investigated in the framework of the one-component plasma model of ions interacting through a screened pair interaction…

等离子体物理 · 物理学 2018-09-10 Zh. A. Moldabekov , S. Groth , T. Dornheim , H. Kaehlert , M. Bonitz , T. S. Ramazanov

We exactly resolve the three-particle steady state of run-and-tumble particles with jamming interactions, providing the first microscopic description beyond two bodies. The invariant measure, derived via a piecewise-deterministic Markov…

统计力学 · 物理学 2026-01-27 Leo Hahn , Arnaud Guillin , Manon Michel

Statistical mechanics provides the foundation for describing complex materials using only a few thermodynamic variables. No such framework currently exists far from equilibrium. In this Letter, we demonstrate how thermodynamics emerges far…

The interaction of partially ionized plasmas with an electromagnetic field is investigated using quantum statistical methods. A general statistical expression for the current density of a plasma in an electromagnetic field is presented and…

统计力学 · 物理学 2009-11-11 Dietrich Kremp , Dirk Semkat , Thomas Bornath , Michael Bonitz , Manfred Schlanges , Paul Hilse

Synthetic active matter systems, such as active colloids, often have complex interactions, which can be of hydrodynamic, chemical or electrostatic origin and cannot be computed from first principles. Here, we use Stochastic Force Inference…

软凝聚态物质 · 物理学 2025-09-26 Jérôme Hem , Alexis Poncet , Pierre Ronceray , Daiki Nishiguchi , Vincent Démery

In this paper we study the electrostatic properties of `Janus' spheres with unequal charge densities on both hemispheres. We introduce a method to compare primitive-model Monte Carlo simulations of the ionic double layer with predictions of…

软凝聚态物质 · 物理学 2012-09-18 Joost de Graaf , Niels Boon , Marjolein Dijkstra , René van Roij

First, we show that there exists in classical mechanics three actions corresponding to different boundary conditions: two well-known actions, the Euler-Lagrange classical action S_cl(x,t;x_0), which links the initial position x_0 and its…

量子物理 · 物理学 2015-03-17 Michel Gondran , Alexandre Gondran

Isothermal-isobaric molecular dynamics simulations are used to examine the microscopic structure and other properties of a model solution consisting of NaCl salt dissolved in water-methanol mixture. The SPC/E water model and the united atom…

软凝聚态物质 · 物理学 2018-06-27 M. Cruz Sanchez , J. Gujt , S. Sokolowski , O. Pizio

In this work a new density functional theory framework is developed to predict the salt-concentration dependent swelling state of charged microgels and the local concentration of monovalent ions inside and outside the microgel. For this…

软凝聚态物质 · 物理学 2017-06-28 Arturo Moncho-Jordá , Joachim Dzubiella

A recently introduced particle-based model for fluid dynamics with effective excluded volume interactions is analyzed in detail. The interactions are modeled by means of stochastic multiparticle collisions which are biased and depend on…

软凝聚态物质 · 物理学 2007-05-23 Thomas Ihle , Erkan Tuzel

A self-consistent mode coupling theory (MCT) with microscopic inputs of equilibrium pair correlation functions is developed to analyze electrolyte dynamics. We apply the theory to calculate concentration dependence of (i) time dependent ion…

统计力学 · 物理学 2015-01-09 Susmita Roy , Subramanian Yashonath , Biman Bagchi

Exploiting the first measurements of the same ion species in O+O collisons at RHIC and LHC, we propose an experimentally accessible observable to distinguish whether collective behaviour builds up through a hydrodynamic expansion of a…

高能物理 - 唯象学 · 物理学 2025-03-18 Sören Schlichting , Clemens Werthmann

We use a combination of unsupervised clustering and sparsity-promoting inference algorithms to learn locally dominant force balances that explain macroscopic pattern formation in self-organized active particle systems. The self-organized…

软凝聚态物质 · 物理学 2023-07-28 Dominik Sturm , Suryanarayana Maddu , Ivo F. Sbalzarini

With a semiclassical quasi-static model we achieve an insight into the complex dynamics of two correlated electrons under the combined influence of a two-center Coulomb potential and an intense laser field. The model calculation is able to…

原子与分子团簇 · 物理学 2009-11-13 J. Liu , D. F. Ye , J. Chen , X. liu

Classical theory of the electric double layer is based on the fundamental assumption of a dilute solution of point ions. There are a number of situations such as high applied voltages, high concentration of electrolytes, systems with…

流体动力学 · 物理学 2015-06-11 Brian D. Storey , Martin Z. Bazant

The fluctuations of ions in polar solvents remain poorly understood theoretically due to the complex coupling between ionic motion and solvent polarization. Indeed, while all-atom resolution can be achieved in numerical simulations,…

软凝聚态物质 · 物理学 2026-05-08 Sleeba Varghese , Benjamin Rotenberg , Pierre Illien