On the rate of convergence of loop-erased random walk to SLE(2)
arXiv:0911.3988
Abstract
We derive a rate of convergence of the Loewner driving function for planar loop-erased random walk to Brownian motion with speed 2 on the unit circle, the Loewner driving function for radial SLE(2). The proof uses a new estimate of the difference between the discrete and continuous Green's functions that is an improvement over existing results for the class of domains we consider. Using the rate for the driving process convergence along with additional information about SLE(2), we also obtain a rate of convergence for the paths with respect to the Hausdorff distance.
v3: 45 pages, 0 figures; a number of minor revisions, modifications, and corrections incorporating comments from referee; some technical proofs moved from main body of text to appendix; to appear in Comm. Math. Phys