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Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory.

10 votes

Probability that planar Brownian motion doesn't "encircle" 0

The probability is asymptotic to $\lambda |x|^{1/4}$. This was proved by Schramm, Werner and myself using the Schramm-Loewner evolution. The exponent is called the disconnection exponent for Brownian …
Greg Lawler's user avatar
3 votes

Non-erasure probability in a loop-erased random walk in three dimensions

You are restating the fundamental hard problem in this area. You are writing down the probability that the nth point on the simple random walk is not erased. Summing this from 0 to n gives the expec …
Greg Lawler's user avatar