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arXiv math/0112234math.PRmath-phmath.CVmath.MP
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平面环擦除随机游动与一致生成树的共形不变性

Conformal invariance of planar loop-erased random walks and uniform spanning trees

Gregory F. Lawler, Oded Schramm, Wendelin Werner

摘要:

证明了单连通区域$D$中环擦除随机游动的标度极限等于$D$中的径向SLE(2)路.特别地,极限存在并且是共形不变的。证明了Jordan域上的一致生成树的标度极限是存在的,并且是共形不变的。假设域的边界是一条$C^1$简单闭曲线,同样的方法被用来证明均匀生成树Peano曲线的缩放极限是连接$A$端点的$D$闭包中的弦SLE(8)路径,其中树沿着边界上的适当弧$A$连接。这个结果的一个副产品是SLE(8)几乎必然是由一条连续路生成的。

英文摘要:

We prove that the scaling limit of loop-erased random walk in a simply connected domain $D$ is equal to the radial SLE(2) path in $D$. In particular, the limit exists and is conformally invariant. It follows that the scaling limit of the uniform spanning tree in a Jordan domain exists and is conformally invariant. Assuming that the boundary of the domain is a $C^1$ simple closed curve, the same method is applied to show that the scaling limit of the uniform spanning tree Peano curve, where the tree is wired along a proper arc $A$ on the boundary, is the chordal SLE(8) path in the closure of $D$ joining the endpoints of $A$. A by-product of this result is that SLE(8) is almost surely generated by a continuous path. The results and proofs are not restricted to a particular choice of lattice.

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