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arXiv 0812.1700cond-mat.stat-mech
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平面自回避聚合物的涨落力

Fluctuation force exerted by a planar self-avoiding polymer

Pierre Le Doussal, Kay Jörg Wiese

摘要:

利用Schramm Loewner演化(SLE)的结果,我们给出了各种二维畴几何中聚合物在不可穿透的小圆盘上施加的涨落诱导力的表达式。我们推广到两种聚合物,并检查是否波动力可以捕获的对象到一个稳定的平衡。我们计算施加在域边界处的物体上的力,以及由这些物体之间的聚合物介导的力。结果可以直接扩展到任何SLE接口,包括伊辛,渗流,和环擦除随机游动。有些与极值统计有关。

英文摘要:

Using results from Schramm Loewner evolution (SLE), we give the expression of the fluctuation-induced force exerted by a polymer on a small impenetrable disk, in various 2-dimensional domain geometries. We generalize to two polymers and examine whether the fluctuation force can trap the object into a stable equilibrium. We compute the force exerted on objects at the domain boundary, and the force mediated by the polymer between such objects. The results can straightforwardly be extended to any SLE interface, including Ising, percolation, and loop-erased random walks. Some are relevant for extremal value statistics.

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