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change file MSD_Diffusion-Coefficient_and_calculation.md
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Ternity committed Sep 5, 2024
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Expand Up @@ -5,3 +5,10 @@ $$MSD=R(t)=<|r(t)-r(0)|^2>$$
其中,尖括号表示平均值。
根据统计原理,当粒子数N足够多,计算时间t足够长(lim N→+∞, lim t→+∞),系统在任一瞬间均可当作时间零点,所计算的平均值应相同。
!!我的问题:何为时间零点?为何平均值相同需要N和t的极限?!!


## Reference

动力学性质计算与检验——以计算体系扩散性质为例.ipynb
扩散系数计算时NPT和NVT系综的影响NPT-NVT Simulation Settings on Diffusion Coefficient Calculation.ipynb
拿分子动力学算个扩散系数,怎么这么多讲究.ipynb

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