论文标题
周期驱动的玻璃中的超均匀性
Hyperuniformity in cyclically driven glasses
论文作者
论文摘要
我们介绍了在循环剪切变形下模型玻璃中密度波动的数值研究。在低剪切幅度的低幅度下，系统达到了稳定的吸收状态，在该状态下，抑制密度波动的稳定状态，揭示了明显的超均匀性指纹，直到有限的长度尺度。相反的情况在上面观察到，其中密度波动得到了强烈增强。我们证明，向该状态的过渡伴随着空间相分离为两个不同的超明均匀区域，这是由于剪切带的形成高于屈服幅度的原因。
We present a numerical investigation of the density fluctuations in a model glass under cyclic shear deformation. At low amplitude of shear, below yielding, the system reaches a steady absorbing state in which density fluctuations are suppressed revealing a clear fingerprint of hyperuniformity up to a finite length scale. The opposite scenario is observed above yielding, where the density fluctuations are strongly enhanced. We demonstrate that the transition to this state is accompanied by a spatial phase separation into two distinct hyperuniform regions, as a consequence of shear band formation above the yield amplitude.
