paper

Fractional -processes and Gibbs measures

arXiv:1011.2713 · doi:10.1016/j.spa.2012.06.001

Abstract

We define and prove existence of fractional -processes as random processes generated by fractional Schrödinger semigroups with Kato-decomposable potentials. Also, we show that the measure of such a process is a Gibbs measure with respect to the same potential. We give conditions of its uniqueness and characterize its support relating this with intrinsic ultracontractivity properties of the semigroup and the fall-off of the ground state. To achieve that we establish and analyze these properties first.

37 pages

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