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arXiv 1409.0329cond-mat.stat-mechnlin.CGphysics.bio-phq-bio.QM
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变系统长度排斥过程的有效遍历性破缺

Effective ergodicity breaking in an exclusion process with varying system length

Christoph Schultens, Andreas Schadschneider, Chikashi Arita

摘要:

具有不同长度的相互作用的粒子的随机过程是相关的,例如对于若干生物应用。我们试图探索在这样的系统中可以期待什么样的新的物理效应。作为一个例子,我们扩展了排他性的排斥过程,可以被看作是一个一维的排斥过程与不同的长度,通过引入朗缪尔动力学。这个过程可以被解释为一个有效的队列模型,它通过允许成批的客户进入和离开来与其他队列进行交互。我们发现令人惊讶的迹象打破遍历在一定的参数制度,其中的渐近增长行为取决于初始长度。我们表明,随机行走与站点相关的跳跃概率定性表现出相同的行为。

英文摘要:

Stochastic processes of interacting particles with varying length are relevant e.g. for several biological applications. We try to explore what kind of new physical effects one can expect in such systems. As an example, we extend the exclusive queueing process that can be viewed as a one-dimensional exclusion process with varying length, by introducing Langmuir kinetics. This process can be interpreted as an effective model for a queue that interacts with other queues by allowing incoming and leaving of customers in the bulk. We find surprising indications for breaking of ergodicity in a certain parameter regime, where the asymptotic growth behavior depends on the initial length. We show that a random walk with site-dependent hopping probabilities exhibits qualitatively the same behavior.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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