Quantitative recurrence properties for self-conformal sets

In this paper we study the quantitative recurrence properties of self-conformal sets $X$ equipped with the map $T:X\to X$ induced by the left shift. In particular, given a function $φ:\mathbb{N}\to(0,\infty),$ we study the metric properties of the set $R(T,φ)=\left\{x\in X:|T^nx-x|<φ(n)\textrm{ for infinitely many }n\in \mathbb{N}\right\}.$ Our main result shows that for the natural measure supported on $X$, $R(T,φ)$ has zero measure if a natural volume sum converges, and under the open set condition $R(T,φ)$ has full measure if this volume sum diverges.

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