Dynamics of ring solitons in an expanding cloud of a Bose-Einstein condensate [0.03%]
玻色-爱因斯坦凝聚物中环状孤子在膨胀气团中的动力学行为
A M Kamchatnov,B I Suleimanov,E N Tsoy
A M Kamchatnov
In this paper, we derive equations for the dynamics of ring dark solitons in an expanding cloud of a two-dimensional Bose-Einstein condensate. Assuming that the soliton's width is much smaller than its radius, we obtain the Hamilton equatio...
Turbulent-nonturbulent interfaces in spatially developing compressible turbulent boundary layers [0.03%]
可压缩发展型湍流边界层中的层流涡流界面
Feng Liu,Ze Yang,Pengfei Lv et al.
Feng Liu et al.
An investigation of the characteristics of the turbulent-nonturbulent interface (TNTI) in spatially developing compressible turbulent boundary layers is performed by using a direct numerical simulation. The mean thicknesses of the TNTI laye...
Transverse collective excitations in liquids: Is the phonon theory of liquid thermodynamics correct? [0.03%]
液体中的横向集体激发：液态热力学的声子理论正确吗？
Taras Bryk,Giancarlo Ruocco
Taras Bryk
Nonhydrodynamic transverse excitations in liquids exhibit a propagation gap in the long-wavelength region of their dispersion curve. Using molecular dynamics simulations, we investigate the density dependence of the propagation gap width in...
P L Krapivsky,Kirone Mallick
P L Krapivsky
We study the evolution of a system of many point particles initially concentrated in a small region in d dimensions. Particles undergo overdamped motion caused by pairwise interactions through the long-ranged repulsive r^{-s} potential; eac...
Rapid state-recrossing kinetics and slow escape kinetics in non-Markovian systems [0.03%]
非马尔可夫系统中的快速状态回返动力学与缓慢逃逸动力学
Qingyuan Zhou,Artur Bakaev,Laura Lavacchi et al.
Qingyuan Zhou et al.
Barrier-crossing processes are often described using Markovian models, where reaction rates are quantified by mean first-passage times (MFPTs), barrier-escape times, or state-correlation functions. However, for systems exhibiting non-Markov...
S Dharmavaram,J A Hanna
S Dharmavaram
Comparison of a few simple models of fluid and solid membranes illustrates how shear stresses can arise from a bending energy through a coupling between curvature and surface stresses, a feature incidental to the fluid or solid nature of th...
Integrability versus chaos in the steady state of many-body open quantum systems [0.03%]
可积性与混沌在许多主体开放量子系统定态中的对比分析
Josef Richter,Lucas Sá,Masudul Haque
Josef Richter
The Lindblad description of an open quantum system gives rise to two types of integrability, since the nonequilibrium steady state can be integrable independently of the Liouvillian. Taking boundary-driven and dephasing spin chains as a rep...
Siddharth Paliwal,Gabriel Koch Ocker,Braden A W Brinkman
Siddharth Paliwal
Neurons in the brain continuously process the barrage of sensory inputs they receive from the environment. A wide array of experimental work has shown that the collective activity of neural populations encodes and processes this constant bo...
Approximation for return time distributions of random walks on sparse networks [0.03%]
稀疏网络上随机游走返回时间分布的近似公式
Erik Hormann,Renaud Lambiotte,George T Cantwell
Erik Hormann
We propose an approximation for the first return time distribution of random walks on undirected networks. We combine a message-passing solution with a mean-field approximation to account for the short- and long-term behaviors, respectively...
Role of compressional dynamics in setting the scale-dependent rheology of granular flows: An explanation for the emergence of thin layer stability [0.03%]
压缩动力学在设定颗粒流尺度相关力学性质中的作用：薄层稳定性的出现的一种解释
Christopher Harper,Josef Dufek,Eric C P Breard
Christopher Harper
One great challenge of modeling granular systems lies in capturing the rheologic dependencies on scale. For example, there are marked differences between quasistatic, intermediate, and rapid flow regimes. In this study, we demonstrate that ...