A Lower Bound on the Growth Exponent for Loop-Erased Random Walk in Two Dimensions
Lawler, Gregory F.; Lawler Gregory F.; Department of Mathematics, Box 90320, Duke University Durham, NC 27708-0320, USA; jose@math.duke.edu.
Журнал:
ESAIM: Probability and Statistics
Дата:
1999
Аннотация:
The growth exponent α for loop-erased or Laplacian random walk on the integer lattice is defined by saying that the expected time to reach the sphere of radius n is of order n<sup>α</sup> . We prove that in two dimensions, the growth exponent is strictly greater than one. The proof uses a known estimate on the third moment of the escape probability and an improvement on the discrete Beurling projection theorem.
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