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arXiv 1407.6729math.PRcond-mat.stat-mechmath-phmath.MP
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随机六顶点模型

Stochastic six-vertex model

Alexei Borodin, Ivan Corwin, Vadim Gorin

摘要:

研究了随机线上参数的象限内非对称六顶点模型。当网格步长趋于0时,模型的随机高度函数收敛到一个明确的确定性极限形状。我们进一步证明了一点波动的极限形状渐近GUE Tracy-Widom分布。我们还解释了我们的模型作为一个相互作用的粒子系统,它可以被看作是一个离散时间推广的ASEP开始从步骤初始条件的等效制定。我们的结果证实了Gwa和Spohn(1992)的早期预测,即该系统属于KPZ普适类。

英文摘要:

We study the asymmetric six-vertex model in the quadrant with parameters on the stochastic line. We show that the random height function of the model converges to an explicit deterministic limit shape as the mesh size tends to 0. We further prove that the one-point fluctuations around the limit shape are asymptotically governed by the GUE Tracy-Widom distribution. We also explain an equivalent formulation of our model as an interacting particle system, which can be viewed as a discrete time generalization of ASEP started from the step initial condition. Our results confirm an earlier prediction of Gwa and Spohn (1992) that this system belongs to the KPZ universality class.

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