当前位置: X-MOL 学术arXiv.cond-mat.dis-nn › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Ergodicity in glass relaxation
arXiv - PHYS - Disordered Systems and Neural Networks Pub Date : 2022-09-26 , DOI: arxiv-2209.12442
Li Wan

We derive an equation for the glass relaxation. In the derivation, the Zwanzig-Mori projection method is not applied explicitly, which makes our equation different from the mode coupling theory. Due to the nonlinearity, it is difficult to solve the equation to get the full behaviors of the glass relaxation. But we can simplify the equation when time approaches infinity and obtain the static result analytically. The static result shows that the density correlation function decays to zero finally, meaning that the glass relaxation is ergodic. In this study, we also find that the force fluctuation of one individual particle averaged in the glass is sensitive to the temperature and is suggested to be a parameter to reflect the structural transition for the glass relaxation.

中文翻译:

玻璃松弛中的遍历性

我们推导出玻璃弛豫的方程。在推导中,没有明确应用 Zwanzig-Mori 投影方法,这使得我们的方程不同于模式耦合理论。由于非线性,很难通过求解方程来获得玻璃弛豫的全部行为。但我们可以在时间接近无穷大时简化方程,解析得到静态结果。静态结果表明,密度相关函数最终衰减为零,这意味着玻璃弛豫是遍历的。在这项研究中,我们还发现玻璃中平均单个粒子的力波动对温度敏感,建议作为反映玻璃弛豫结构转变的参数。
更新日期:2022-09-27
down
wechat
bug