论文标题
玻璃系统复兴和记忆行为的激活过程的真实空间模型
Real-space model for activated processes in rejuvenation and memory behavior of glassy systems
论文作者
论文摘要
我们提供了纯粹基于激活过程的替代真实空间描述，以理解分层景观中的放松动态。为此，我们使用簇模型（堵塞系统的粗粒晶格模型）来分析硬猝灭后衰老期间的恢复和记忆效应。在此模型中，晶格上的粒子通过局部相互作用凝聚成簇成簇，这些簇根据其大小而碎片。尽管群集模型很简单，但已证明它可以重现胶体系统中衰老动力学的显着可观察物，例如考虑到粒子迁移率和位移的胶体系统。在这里，我们探究了模型的更复杂的淬灭协议，并表明它表现出了与玻璃能量景观的复杂分层结构相似的复兴和记忆效应。
We offer an alternative real-space description, based purely on activated processes, for the understanding of relaxation dynamics in hierarchical landscapes. To this end, we use the cluster model, a coarse-grained lattice model of a jammed system, to analyze rejuvenation and memory effects during aging after a hard quench. In this model, neighboring particles on a lattice aggregate through local interactions into clusters that fragment with a probability based on their size. Despite the simplicity of the cluster model, it has been shown to reproduce salient observables of the aging dynamics in colloidal systems, such as those accounting for particle mobility and displacements. Here, we probe the model for more complex quench protocols and show that it exhibits rejuvenation and memory effects similar to those attributed to the complex hierarchical structure of a glassy energy landscape.
