arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1605.01293cond-mat.stat-mech
收藏

畴壁理论与排阻驱动流的非定常性

Domain wall theory and non-stationarity in driven flow with exclusion

R. B. Stinchcombe, S. L. A. de Queiroz

摘要:

研究了具有开放边界的一维均匀和非均匀(交错)系统中被称为完全非对称简单排斥过程的随机非平衡模型向稳态的动力学演化.畴壁理论和数值模拟的使用,并在适当的情况下,他们的结果进行比较,现有的平均场的预测和精确的解决方案。对于均匀的链,我们发现,包含固有的波动的畴壁制定起着至关重要的作用,提供良好的协议与模拟,这是严重缺乏相应的平均场预测。对于交替键链的结构域壁预测的注入和喷射率的参数空间中的相图的功能变成只能在一个初期和定量近似的方式实现。尽管如此,显着的定量协议可以发现几个额外的畴壁理论的预测和数值。

英文摘要:

We study the dynamical evolution toward steady state of the stochastic non-equilibrium model known as totally asymmetric simple exclusion process, in both uniform and non-uniform (staggered) one-dimensional systems with open boundaries. Domain-wall theory and numerical simulations are used and, where pertinent, their results are compared to existing mean-field predictions and exact solutions where available. For uniform chains we find that the inclusion of fluctuations inherent to the domain-wall formulation plays a crucial role in providing good agreement with simulations, which is severely lacking in the corresponding mean-field predictions. For alternating-bond chains the domain-wall predictions for the features of the phase diagram in the parameter space of injection and ejection rates turn out to be realized only in an incipient and quantitatively approximate way. Nevertheless, significant quantitative agreement can be found between several additional domain-wall theory predictions and numerics.

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。

↑