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Molecular rotors form twisted conformations upon photoexcitation, with their fluorescent relaxation time serving as a measure of viscosity. They have been used to assess membrane viscosities but yield higher values compared to other…

软凝聚态物质 · 物理学 2024-12-13 Vinny C. Suja , Naomi Oppenheimer , Howard A. Stone

We develop an inertial coupling method for modeling the dynamics of point-like 'blob' particles immersed in an incompressible fluid, generalizing previous work for compressible fluids. The coupling consistently includes excess (positive or…

软凝聚态物质 · 物理学 2015-08-06 F. Balboa Usabiaga , R. Delgado-Buscalioni , B. E. Griffith , A. Donev

The dynamics of inelastic hard spheres is described in terms of the binary collision expansion, yielding the corresponding pseudo-Liouville equation and BBGKY hierarchy for the reduced distribution functions. Based on cluster expansion…

统计力学 · 物理学 2008-02-03 T. P. C. van Noije , M. H. Ernst

Randomly diluted quantum boson and spin models in two dimensions combine the physics of classical percolation with the well-known dimensionality dependence of ordering in quantum lattice models. This combination is rather subtle for models…

无序系统与神经网络 · 物理学 2007-05-23 N. Bray-Ali , J. E. Moore , T. Senthil , A. Vishwanath

We study the hydrodynamics of spherical spinners suspended in a Newtonian fluid at inertial regime. We observe a spontaneous condensation of the spinners into particle rich regions, at low but finite particle Reynolds numbers and volume…

软凝聚态物质 · 物理学 2020-04-01 Zaiyi Shen , Juho S. Lintuvuori

We study numerically the properties of local low-energy excitations in the two-dimensional Ising spin glass. Given the ground state, we determine the lowest-lying connected cluster of flipped spins containing one given spin, either with a…

无序系统与神经网络 · 物理学 2009-11-10 Ludovic Berthier , A. P. Young

The effective dynamics of solitons for the generalized nonlinear Schr\"odinger equation in a random potential is rigorously studied. It is shown that when the external potential varies slowly in space compared to the size of the soliton,…

数学物理 · 物理学 2008-06-17 Walid K. Abou Salem , Catherine Sulem

Numerical simulation of evolution of a cluster of a finite number of gravitating bodies interacting only by their intrinsic gravity has been carried out. The goal of the study was to reveal the main characteristic phases of the spatial…

经典物理 · 物理学 2022-11-01 Dmitry G. Kiryan , George V. Kiryan

Ionization and excitation of water molecules in intense laser pulses is studied theoretically by solving the three-dimensional time-dependent electronic Schr\"odinger equation within the single-active-electron approximation. The possibility…

原子物理 · 物理学 2011-12-13 Simon Petretti , Alejandro Saenz , Alberto Castro , Piero Decleva

We explore theoretically the complex dynamics and emergent behaviors of spinning spheres immersed in viscous fluid. The particles are coupled to each-other via the fluid in which they are suspended: each particle disturbs the surrounding…

流体动力学 · 物理学 2015-09-18 Enkeleida Lushi , Petia M. Vlahovska

We study the vibrational spectrum of the protonated water dimer, by means of a divide-and-conquer semiclassical initial value representation of the quantum propagator, as a first step in the study of larger protonated water clusters. We use…

化学物理 · 物理学 2019-09-23 Gianluca Bertaina , Giovanni Di Liberto , Michele Ceotto

We use the inverse scattering transform and a diffusion approximation limit theorem to study the stability of soliton components of the solution of the nonlinear Schr\"{o}dinger and Korteweg-de Vries equations under random perturbations of…

偏微分方程分析 · 数学 2014-03-21 Ennio Fedrizzi

Molecular rotation, vibration, internal rotation, isomerization, tunneling, intermolecular dynamics of weakly and strongly interacting systems, intra-to-inter-molecular energy transfer, hindered rotation and hindered translation over…

化学物理 · 物理学 2022-12-02 Edit Mátyus , Alberto Martín Santa Daría , Gustavo Avila

A method to couple interparticle contact models with Stokesian dynamics (SD) is introduced to simulate colloidal aggregates under flow conditions. The contact model mimics both the elastic and plastic behavior of the cohesive connections…

软凝聚态物质 · 物理学 2015-03-20 Ryohei Seto , Robert Botet , Günter K. Auernhammer , Heiko Briesen

In this work we derive and analyze coarse-grained descriptions of self-propelled particles with selective attraction-repulsion interaction, where individuals may respond differently to their neighbours depending on their relative state of…

软凝聚态物质 · 物理学 2016-05-02 Robert Grossmann , Lutz Schimansky-Geier , Pawel Romanczuk

The long-term behavior of a modulationally unstable conservative nonintegrable system is known to be characterized by the soliton turbulence self-organization process. We consider this problem in the presence of a long-range interaction in…

斑图形成与孤子 · 物理学 2021-08-31 Josselin Garnier , Kilian Baudin , Adrien Fusaro , Antonio Picozzi

Alignment of OCS, CS$_2$ and I$_2$ molecules embedded in helium nanodroplets is measured as a function of time following rotational excitation by a non-resonant, comparatively weak ps laser pulse. The distinct peaks in the power spectra,…

Numerous formulation processes of materials involve a drying step, during which evaporation of a solvent from a multi-component liquid mixture, often confined in a thin film or in a droplet, lead to concentration and assembly of non…

软凝聚态物质 · 物理学 2024-02-09 Florence Gibouin , Dharshana Nalatamby , Pierre Lidon , Yaocihuatl Medina-Gonzalez

The paper is concerned with a nonlinear system of two coupled fractional Schr\"odinger equations with both attractive intraspecies and attractive interspecies interactions in $\mathbb{R}$. By analyzing an associated $L^2$-constrained…

偏微分方程分析 · 数学 2026-01-08 Chungen Liu , Zhigao Zhang , Jiabin Zuo

We present a realistic model of the fragile glass former orthoterphenyl and the results of extensive molecular dynamics simulations in which we investigated its basic static and dynamic properties. In this model the internal molecular…

无序系统与神经网络 · 物理学 2009-10-31 S. Mossa , R. Di Leonardo , G. Ruocco , M. Sampoli