Abstract
We study the problem of estimating the L2-norm of Laplace eigenfunctions on a compact Riemannian manifold M when restricted to a hypersurface H. We prove mass estimates for the restrictions of eigenfunctions φh, (h2δ - 1)φh = 0, to H in the region exterior to the coball bundle of H, on hδ-scales (0 ≤ δ ≤ 23). We use this estimate to obtain an O(1) L2-restriction bound for the Neumann data along H. The estimate also applies to eigenfunctions of semiclassical Schrödinger operators.
| Original language | English |
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| Pages (from-to) | 1638-1665 |
| Number of pages | 28 |
| Journal | International Mathematics Research Notices |
| Volume | 2015 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2015 |