Abstract.
Let X be a symmetric stable process of index α∈ (1,2] and let L x t denote the local time at time t and position x. Let V(t) be such that L t V(t) = sup x∈ ℝ L t x. We call V(t) the most visited site of X up to time t. We prove the transience of V, that is, lim t →∞ |V(t)| = ∞ almost surely. An estimate is given concerning the rate of escape of V. The result extends a well-known theorem of Bass and Griffin for Brownian motion. Our approach is based upon an extension of the Ray–Knight theorem for symmetric Markov processes, and relates stable local times to fractional Brownian motion and further to the winding problem for planar Brownian motion.
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Received: 14 October 1998 / Revised version: 8 June 1999 / Published online: 7 February 2000
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Bass, R., Eisenbaum, N. & Shi, Z. The most visited sites of symmetric stable processes. Probab Theory Relat Fields 116, 391–404 (2000). https://doi.org/10.1007/s004400050255
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DOI: https://doi.org/10.1007/s004400050255
Keywords
- Brownian Motion
- Markov Process
- Local Time
- Stable Process
- Fractional Brownian Motion