A limit theorem for occupation times of Lamperti’s stochastic processes

Abstract

The arcsine law for random walks on the line is well known and it was extended greatly by Lamperti for a class of discrete-time stochastic processes. In the present paper we treat its extreme case where the excursion intervals have very heavy tail probabilities. The result is a refinement of Lamperti’s theorem. A functional limit theorem is also discussed.