Abstract
Some fifteen years ago, Shuler formulated three conjectures relating to the large-time asymptotic properties of a nearest-neighbor random walk on ℤ2 that is allowed to make horizontal steps everywhere but vertical steps only on a random fraction of the columns. We give a proof of his conjectures for the situation where the column distribution is stationary and satisfies a certain mixing codition. We also prove a strong form of scaling to anisotropic Brownian motion as well as a local limit theorem. The main ingredient of the proofs is a large-deviation estimate for the number of visits to a random set made by a simple random walk on ℤ. We briefly discuss extensions to higher dimension and to other types of random walk.
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Dedicated to Prof. K. E. Shuler on the occasion of his 70th birthday, celebrated at a Symposium in his honor on July 13, 1992, at the University of California at San Diego, La Jolla, California.
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den Hollander, F. On three conjectures by K. E. Shuler. J Stat Phys 75, 891–918 (1994). https://doi.org/10.1007/BF02186749
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DOI: https://doi.org/10.1007/BF02186749