arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1407.0458cond-mat.stat-mech
收藏

点源晶格气体

Lattice gases with a point source

P. L. Krapivsky, Darko Stefanovic

摘要:

我们研究扩散晶格气体与本地注入的粒子,即我们假设,每当原点成为空的,一个新的粒子立即注入到原点。我们考虑两种晶格气体:对称简单排斥过程和随机游动。注入事件和已经存在的粒子的位置之间的相互作用意味着即使对于表面上不相互作用的随机行走者也是有效的集体相互作用。我们确定进入初始空系统的粒子的平均总数。我们还计算了所有粒子访问的不同站点的平均总数,并讨论了访问域的形状和访问统计。

英文摘要:

We study diffusive lattice gases with local injection of particles, namely we assume that whenever the origin becomes empty, a new particle is immediately injected into the origin. We consider two lattice gases: a symmetric simple exclusion process and random walkers. The interplay between the injection events and the positions of the particles already present implies an effective collective interaction even for the ostensibly non-interacting random walkers. We determine the average total number of particles entering into the initially empty system. We also compute the average total number of distinct sites visited by all particles, and discuss the shape of the visited domain and the statistics of visits.

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。

↑