论文标题
玻璃放松中的终身性
Ergodicity in glass relaxation
论文作者
论文摘要
我们得出一个玻璃放松的方程式。在派生中，Zwanzig-Mori投影方法未明确应用，这使得我们的方程式与模式耦合理论不同。由于非线性，很难求解方程来获得玻璃放松的全部行为。但是，当时间接近无穷大并分析获得静态结果时，我们可以简化方程。静态结果表明，密度相关函数最终衰减到零，这意味着玻璃弛豫是千古的。在这项研究中，我们还发现，玻璃中平均一个单个粒子的力波动对温度敏感，并被认为是反映玻璃松弛的结构过渡的参数。
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.
