Bounds for the periods of eigenfunctions on arithmetic hyperbolic 3-manifolds over surfaces

Abstract

Let $\psi$ be a Hecke-Maass form on a compact congruence arithmetic hyperbolic 3-manifold $X$, and let $Y$ be a hyperbolic surface in $X$ that is not necessarily closed. We obtain a power saving result over the local bound for the period of $\psi$ along $Y$, by applying the method of arithmetic amplification developed by Iwaniec and Sarnak.