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arXiv 1809.03231cond-mat.stat-mechmath-phmath.MPnlin.CG
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TASEP中的动力学相变与Langmuir动力学:平均场论

Dynamical transition in the TASEP with Langmuir kinetics: mean-field theory

Davide Botto, Alessandro Pelizzola, Marco Pretti, Marco Zamparo

摘要:

为了研究具有开边界的完全非对称简单排斥过程的动力学跃迁,我们发展了一个平均场论。后一种现象表现为系统向其非平衡稳态的弛豫速率的奇异性。在高密度(低密度)相,弛豫速率变得独立的注入(提取)率,在一定的临界值的参数本身,这种转变是不伴随着任何定性的变化,在稳态行为。我们的特点是通过提供严格的界限,成为紧的热力学极限的弛豫速率。这些结果被推广到TASEP与朗缪尔动力学,其中颗粒也可以结合到空的网站或从占用的unbind,在对称的情况下,相等的结合/unbinding率。该理论预测在这种情况下也会发生动力学转变。

英文摘要:

We develop a mean-field theory for the totally asymmetric simple exclusion process (TASEP) with open boundaries, in order to investigate the so-called dynamical transition. The latter phenomenon appears as a singularity in the relaxation rate of the system toward its non-equilibrium steady state. In the high-density (low-density) phase, the relaxation rate becomes independent of the injection (extraction) rate, at a certain critical value of the parameter itself, and this transition is not accompanied by any qualitative change in the steady-state behavior. We characterize the relaxation rate by providing rigorous bounds, which become tight in the thermodynamic limit. These results are generalized to the TASEP with Langmuir kinetics, where particles can also bind to empty sites or unbind from occupied ones, in the symmetric case of equal binding/unbinding rates. The theory predicts a dynamical transition to occur in this case as well.

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