Unified Theory of Glass Transition

1.通过分子动力学模拟，在宽的频域和波数域范围内研究了过冷二元软球的广义磁化率，首次证明了简单系统中存在的快过程与局域扩散运动有关.提出了过冷液体动力学的理想三模模型.研究了非高斯参数的特征行为，发现在过冷流体中存在双峰.在频域中引入了非高斯性的概念。利用非高斯性，我们首次证明了均匀机制比非均匀机制在过冷流体中的慢弛豫中占主导地位。使用分子动力学模拟，我们表明，平移模式是更多的拉伸比旋转motion 6。利用随机模型，我们得到了塑性晶体的转动弛豫，并证明了转动玻璃化转变与Vogel-Fulcher温度有关

1. We investigated the generalized susceptibility of supercooled binary soft spheres in a wide range of the frequency and wave number domain by molecular dynamics simulation, and showed for the frist time that the fast process exists in the simple system and is related to a localized-diffusive motion.2. We proposed an ideal three mode model for the dynamics of supercooled liquids.3. The characteristic behavior of the non-Gaussian paramater was investigated and was shown to have a double peak in supercooled fluids.4. We introduced the concept of non-Gaussianity in the frequencey domain. Exploiting the non Gaussianity, we proved for the first time that the homogeneous mechanism is dominant than the inhomogeneous mechanism for the slow relaxation in supercooled fluids5. Using the molecular dynamic simulation, we showed that the translational mode is more stretched than the rotational motion6. Using a stochastic mode, we obtained the rotational relaxation in a plastic crystal and showed that the rotational glass transition is related the Vogel-Fulcher temperature