Connecting the random organization transition and jamming within a unifying model system
Connecting the random organization transition and jamming within a unifying model system
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DOI：
10.1103/physreve.88.062308
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发表时间：
2013-12-13
影响因子：
2.4
通讯作者：
Schmiedeberg, Michael
中科院分区：
文献类型：
--
作者：
Milz, Lars;Schmiedeberg, Michael
虽然随机组织转变描述了在非平衡系统中从可逆到不可逆动力学的变化，但当颗粒不再能够避免重叠时，在零剪切速率下发生非热堵塞转变。尽管这两个过渡之间的明显差异，我们表明，它们都发生在同一个模型包装问题。在这个统一的模型系统中，粒子首先随机分布，然后如果它们重叠，则在每一步中移位。对于随机位移，我们得到一个随机的组织过渡，而干扰发生在确定性的移位的情况下。我们还分析了随机组织的临界行为。我们的研究结果表明，随机组织和干扰的随机球包装的相反的限制，我们希望各种平衡和非平衡过渡可以制定为相关的中间包装问题。
While the random organization transition describes the change from reversible to irreversible dynamics in a nonequilibrium system, the athermal jamming transition at zero shear rate occurs when particles can no longer avoid overlaps. Despite the obvious differences between these two transitions, we show that they both occur within the same model packing problem. In this unifying model system the particles are first randomly distributed and then displaced in each step if they overlap. For random displacements we obtain a random organization transition, while jamming occurs in the case of deterministic shifts. We also analyze the critical behavior of random organization. Our results show that random organization and jamming are opposite limits of random sphere packings, and we expect that various equilibrium and nonequilibrium transitions can be formulated as related intermediate packing problems.