arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2012.01195cond-mat.softcond-mat.dis-nncond-mat.stat-mech
收藏

如何研究持久活性玻璃体系?

How to Study a Persistent Active Glassy System?

Rituparno Mandal, Peter Sollich

摘要:

我们探讨玻璃动力学的致密组件的软粒子,是自我推进的主动力量。这些力具有固定的幅度和在时间尺度tau_p(持续时间尺度)上变化的推进方向。这种主动眼镜的数值模拟是计算上的挑战时,动态是由大的持久时间。我们详细描述了最近提出的一个计划,允许一个直接研究的动态在大持久性的时间限制,周围的时间尺度和远高于持久性时间。我们讨论背后的想法,我们称之为活动驱动的动力学,以及它的数值实现。我们确定,我们的处方忠实地再现所有的动力学量在适当的限制τ_p走向无穷大。我们部署的方法来详细探索的统计Eshelby样的塑料事件在稳态动态的密集和间歇性的活性玻璃。

英文摘要:

We explore glassy dynamics of dense assemblies of soft particles that are self-propelled by active forces. These forces have a fixed amplitude and a propulsion direction that varies on a timescale tau_p, the persistence timescale. Numerical simulations of such active glasses are computationally challenging when the dynamics is governed by large persistence times. We describe in detail a recently proposed scheme that allows one to study directly the dynamics in the large persistence time limit, on timecales around and well above the persistence time. We discuss the idea behind the proposed scheme, which we call activity-driven dynamics, as well as its numerical implementation. We establish that our prescription faithfully reproduces all dynamical quantities in the appropriate limit tau_p goes to infinity. We deploy the approach to explore in detail the statistics of Eshelby-like plastic events in the steady state dynamics of a dense and intermittent active glass.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑