Testing theories of the glass transition with the same liquid, but many kinetic rules
arXiv (Cornell University)(2023)
摘要
We study the glass transition by exploring a broad class of kinetic rules
that can significantly modify the normal dynamics of super-cooled liquids,
while maintaining thermal equilibrium. Beyond the usual dynamics of liquids,
this class includes dynamics in which a fraction (1-f_R) of the particles can
perform pairwise exchange or 'swap moves', while a fraction f_P of the
particles can only move along restricted directions. We find that (i) the
location of the glass transition varies greatly but smoothly as f_P and f_R
change and (ii) it is governed by a linear combination of f_P and f_R.
(iii) Dynamical heterogeneities are not governed by the static structure of the
material. Instead, they are similar at the glass transition across the (f_R,
f_P) diagram. These observations are negative items for some existing
theories of the glass transition, particularly those reliant on growing
thermodynamic order or locally favored structure, and open new avenues to test
other approaches.
更多查看译文
关键词
glass transition,same liquid
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要