论文标题
堵塞硬球的记忆形成
Memory formation in jammed hard spheres
论文作者
论文摘要
液体在发作密度以下平衡的液体具有相似的固有状态，而高于该密度的固有状态明显不同。尽管这种现象是在20年前首次在模拟中报道的，但这种记忆的物理起源仍然存在争议。尤其是对平均场描述的缺失，长期以来对其热力学相关性产生了怀疑。在最新的理论建议的激励下，我们使用快速硬球性障碍算法重新评估模拟中的发作现象学，并在热力学和尺寸上发现它。值得注意的是，我们还发现了第二种与沿界行为的行为变化相关的第二种内存。
Liquids equilibrated below an onset density share similar inherent states, while above that density their inherent states markedly differ. Although this phenomenon was first reported in simulations over 20 years ago, the physical origin of this memory remains controversial. Its absence from mean-field descriptions, in particular, has long cast doubt on its thermodynamic relevance. Motivated by a recent theoretical proposal, we reassess the onset phenomenology in simulations using a fast hard sphere jamming algorithm and find it both thermodynamically and dimensionally robust. Remarkably, we also uncover a second type of memory associated with a Gardner-like change in behavior along the jamming algorithm.
