We use the isoconfigurational (IC) ensemble to show the connection between emerging heterogeneities in the tetrahedral order parameter and the dynamic propensity in a mildly undercooled glass-forming liquid. We observe that spatially correlated tetrahedrally-(dis)ordered clusters of molecules are observable on the time scale of structural relaxation. The heterogeneities of tetrahedrally-(dis)ordered clusters correlate with dynamical heterogeneities (DH) and these correlations reach peaks at similar time scales. We discover that the angular component of the tetrahedral order parameter is strongly correlated to the dynamics compared to the radial component. Moreover, these correlations between the dynamics and tetrahedrally-(dis)ordered regions enormously influence the system, with spatial correlations being observable for a prolonged period beyond the peaks of maximum DH. Further, we discover that the crystalline particle environments in our water model (as identified by the IC ensemble) may be the origin for slow dynamics of dynamical heterogeneity in our undercooled model water system.

我们使用等构（IC）集合来显示四面体阶参数中出现的异质性与温和过冷的玻璃形成液中的动态倾向之间的联系。我们观察到，在结构弛豫的时间尺度上可以观察到分子的空间相关的四面体（无序）簇。四面体（无序）簇的异质性与动态异质性（DH）相关，并且这些相关性在相似的时间尺度上达到峰值。我们发现，与径向分量相比，四面体阶参数的角分量与动力学高度相关。而且，动力学和四面体（无序）区域之间的这些相关性极大地影响了系统，在超过最大DH峰值的时间范围内，可以长时间观察到空间相关性。此外，我们发现水模型中的晶体颗粒环境（由IC集成确定）可能是我们过冷模型水系统中动态异质性缓慢动力学的起源。