arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0704.1497cond-mat.dis-nncond-mat.softcond-mat.stat-mech
收藏

将微观模拟与玻璃的动力学约束模型相结合

Connecting microscopic simulations with kinetically constrained models of glasses

Matthew T. Downton, Malcolm P. Kennett

摘要:

已知动力学约束自旋模型表现出模仿玻璃形成系统的动力学行为。它们通常被理解为玻璃形成者的粗粒度模型,在一些“流动性”领域。这个“流动性”领域的身份仍然难以捉摸,由于缺乏粗粒度的程序,以获得这些模型从更微观的角度来看。在这里,我们展示了一个计划,以映射到一个动力学约束的自旋模型的二维软盘玻璃形成的动力学,提供了一个尝试,在桥接这两种方法。

英文摘要:

Kinetically constrained spin models are known to exhibit dynamical behavior mimicking that of glass forming systems. They are often understood as coarse-grained models of glass formers, in terms of some "mobility" field. The identity of this "mobility" field has remained elusive due to the lack of coarse-graining procedures to obtain these models from a more microscopic point of view. Here we exhibit a scheme to map the dynamics of a two-dimensional soft disc glass former onto a kinetically constrained spin model, providing an attempt at bridging these two approaches.

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。

↑