arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.07313cond-mat.stat-mechcond-mat.soft
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两种相互作用电机模型的聚类分析

Clustering in two models of interacting motors

Jim Chacko, Sudipto Muhuri, Goutam Tripathy

摘要:

我们研究了两个物种的双向排斥过程,和一个单一的物种的变体,这是出于细胞器和囊泡沿微管的运动。具体而言,我们感兴趣的是在一个单一的大集群的翻译转换率的比率$Q$的颗粒和外观的集群是不同的。我们发现,虽然对于一个有限的系统,有一个集群现象,其中发现一个单一的大集群的概率从可以忽略不计的变化,具有有限的值,该现象转移到更大的$Q$值作为系统的大小增加。这表明,所观察到的集群是不是一个真正的(非平衡)过渡在热力学意义上,而是一个有限尺寸的效果。

英文摘要:

We study a two-species bidirectional exclusion process, and a single species variant, which is motivated by the motion of organelles and vesicles along microtubules. Specifically, we are interested in the clustering of the particles and appearance of a single large cluster as the ratio $Q$ of the translation to switching rates is varied. We find that, although for a finite system, there is a clustering phenomenon in which the probability of finding a single large cluster changes from being negligible to having finite values, the phenomenon shifts to larger $Q$ values as the system size is increased. This suggests that the observed clustering is not a true (nonequilibrium) transition in the thermodynamic sense but rather a finite-size effect.

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