Continuity and Singularity of the Intersection Local Time of Stable Processes in $\mathbb{R}^2$

Abstract

We show that the planar symmetric stable process $X_t$ of index $\frac{4}{3} < \beta < 2$ has an intersection local time $\alpha(x, \cdot)$ which is weakly continuous in $x \neq 0$, while $\alpha(x, \lbrack 0, T\rbrack^2) \sim \frac{c}{|x|^{2 - \beta}}, \quad\text{as} x \rightarrow 0.$