论文标题
活动旋转器系统中的局部旋转堵塞和多尺度超均匀性
Local Rotational Jamming and Multi-Scale Hyperuniformities in an Active Spinner System
论文作者
论文摘要
模拟了由许多自旋二聚体组成的活动系统，并随着密度增加而观察到独特的局部旋转式最好间跃迁。在低密度状态下，系统保持在吸收状态，在该状态下，每个二聚体都会独立旋转受施加的扭矩。而在高密度状态下，二聚体的一部分被旋转加入局部簇，并且该系统表现出旋转分解，例如两相形态。对于足够高的密度，该系统在旋转和转化的自由度上都完全堵塞了。在上述阶段之间，发现这种简单的系统在上述阶段中表现出丰富的多尺度无序超均匀性：吸收状态显示最强类别的关键超均匀性，并在亚关上保留了消失的密度 - 透支的扩大到一定长度的规模；相对于相簇尺寸，局部约束状态相反，局部显示了两相的超均匀性。完全堵塞的状态似乎是一种单体晶体，但本质上失去了大规模的超均匀性。这些结果激发了通过动态组织设计新颖的相分离和无序超一样系统的鼓舞人心。
An active system consisting of many self-spinning dimers is simulated, and a distinct local rotational jamming transition is observed as the density increases. In the low density regime, the system stays in an absorbing state, in which each dimer rotates independently subject to the applied torque. While in the high density regime, a fraction of the dimers become rotationally jammed into local clusters, and the system exhibits spinodal-decomposition like two-phase morphologies. For high enough densities, the system becomes completely jammed in both rotational and translational degrees of freedom. Such a simple system is found to exhibit rich and multiscale disordered hyperuniformities among the above phases: the absorbing state shows a critical hyperuniformity of the strongest class and subcritically preserves the vanishing density-fluctuation scaling up to some length scale; the locally-jammed state shows a two-phase hyperuniformity conversely beyond some length scale with respect to the phase cluster sizes; the totally jammed state appears to be a monomer crystal, but intrinsically loses large-scale hyperuniformity. These results are inspiring for designing novel phase-separation and disordered hyperuniform systems through dynamical organization.
