Restriction of toral eigenfunctions to hypersurfaces
Jean Bourgain, Zeev Rudnick

TL;DR
This paper derives uniform bounds for Laplacian eigenfunctions on flat tori when restricted to curved hypersurfaces, advancing understanding of eigenfunction behavior in geometric analysis.
Contribution
It provides the first uniform bounds on eigenfunction restrictions to curved hypersurfaces on flat tori, filling a gap in spectral geometry.
Findings
Established uniform upper bounds on eigenfunction restrictions.
Established uniform lower bounds on eigenfunction restrictions.
Applicable to 2D and 3D flat tori with curved hypersurfaces.
Abstract
We establish uniform upper and lower bounds on the restrictions of the eigenfunctions of the Laplacian on the 2- and 3-dimensional standard flat torus to smooth hyper-surfaces with non-vanishing curvature.
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Taxonomy
TopicsGeometric Analysis and Curvature Flows · Geometry and complex manifolds · Analytic and geometric function theory
