论文标题
简单的结构玻璃中的动态加德纳跨界
Dynamic Gardner crossover in a simple structural glass
论文作者
论文摘要
理论上，负责无定形凝固的障碍过渡的关键性与热力学加德纳相的边际稳定性有关。尽管干扰的关键指数似乎独立于制备史，但Gardner物理学的相关性远非平衡是一个悬而未决的问题。为了填补这一空白，我们通过数值研究使用各种协议压缩的硬盘的无量化动力学。我们表明，加德纳物理学的动态特征可以与老化的放松动力学相关。因此，无论历史如何，我们都定义了通用的动态加德纳跨界。我们的结果表明，始终通过探索越来越复杂的景观来访问干扰过渡，从而导致了异常的微观弛豫动力学，从理论上讲尚待理解。
The criticality of the jamming transition responsible for amorphous solidification has been theoretically linked to the marginal stability of a thermodynamic Gardner phase. While the critical exponents of jamming appear independent of the preparation history, the pertinence of Gardner physics far from equilibrium is an open question. To fill this gap, we numerically study the nonequilibrium dynamics of hard disks compressed towards the jamming transition using a broad variety of protocols. We show that dynamic signatures of Gardner physics can be disentangled from the aging relaxation dynamics. We thus define a generic dynamic Gardner crossover regardless of the history. Our results show that the jamming transition is always accessed by exploring increasingly complex landscape, resulting in the anomalous microscopic relaxation dynamics that remains to be understood theoretically.
