主动与被动圆盘二维熔化中拓扑缺陷的聚集
软凝聚态物质
2021-06-07 v2 统计力学
摘要
我们对二维被动和主动排斥圆盘系统中出现的各类拓扑缺陷进行了定量分析。我们表明,从固态到六角相的过渡是由位错的解绑驱动的。相反,尽管我们在液相一出现时就看到 disclinations 的解离,但在固-六角临界线以下,扩展的缺陷团簇占主导地位。后者在连续情况下于六角-液相变处 percolate,或在非连续情况下于共存区域内 percolate,并且其形态随活性增加而更加分支化。
引用
@article{arxiv.1911.06366,
title = {Clustering of topological defects in two-dimensional melting of active and passive disks},
author = {Pasquale Digregorio and Demian Levis and Leticia F. Cugliandolo and Giuseppe Gonnella and Ignacio Pagonabarraga},
journal= {arXiv preprint arXiv:1911.06366},
year = {2021}
}
备注
The numerical results in this draft were superseded by a much more extended analysis that we will present in a 2021 arXiv preprint