论文标题
结构性随机性：软盘和销
Structured randomness: Jamming of soft discs and pins
论文作者
论文摘要
模拟用于找到零温度干扰阈值，$ ϕ_j $，用于在有小固定颗粒的情况下软化的bidisperse磁盘，或在晶格中排列的“销钉”。正如人们所期望的那样，引脚的存在导致了$ ϕ_j $的减少。在干扰阈值附近的系统的结构特性是根据销密度的函数计算的。虽然相关长度指数在低针密度下保持$ν= 1/2 $，但该系统在机械上具有稳定的键，但键却少于麦克斯韦（Maxwell）标准在没有销钉的情况下所暗示的。另外，随着销密度的增加，出现了新型的键取向阶和远程空间顺序，这与销晶格的平方对称性相关。
Simulations are used to find the zero temperature jamming threshold, $ϕ_j$, for soft, bidisperse disks in the presence of small fixed particles, or "pins", arranged in a lattice. The presence of pins leads, as one expects, to a decrease in $ϕ_j$. Structural properties of the system near the jamming threshold are calculated as a function of the pin density. While the correlation length exponent remains $ν= 1/2$ at low pin densities, the system is mechanically stable with more bonds, yet fewer contacts than the Maxwell criterion implies in the absence of pins. In addition, as pin density increases, novel bond orientational order and long-range spatial order appear, which are correlated with the square symmetry of the pin lattice.
