Refined $L^p$ restriction estimate for eigenfunctions on Riemannian surfaces
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866917551406055424 |
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| author | Gao, Chuanwei Miao, Changxing Xi, Yakun |
| author_facet | Gao, Chuanwei Miao, Changxing Xi, Yakun |
| contents | We refine the $L^p$ restriction estimates for Laplace eigenfunctions on a Riemannian surface, originally established by Burq, Gérard, and Tzvetkov. First, we establish estimates for the restriction of eigenfunctions to arbitrary Borel sets on the surface, following the formulation of Eswarathasan and Pramanik. We achieve this by proving a variable coefficient version of a weighted Fourier extension estimate of Du and Zhang. Our results naturally unify the $L^p(M)$ estimates of Sogge and the $L^p(γ)$ restriction bounds of Burq, Gérard, and Tzvetkov, and are sharp for all $p \geq 2$, up to a $λ^\varepsilon$ loss. Second, we derive sharp estimates for the restriction of eigenfunctions to tubular neighborhoods of a curve with nonvanishing geodesic curvature. These estimates are closely related to a variable-coefficient version of the Mizohata--Takeuchi conjecture, providing new insights into eigenfunction concentration phenomena. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_01577 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Refined $L^p$ restriction estimate for eigenfunctions on Riemannian surfaces Gao, Chuanwei Miao, Changxing Xi, Yakun Analysis of PDEs Classical Analysis and ODEs Spectral Theory We refine the $L^p$ restriction estimates for Laplace eigenfunctions on a Riemannian surface, originally established by Burq, Gérard, and Tzvetkov. First, we establish estimates for the restriction of eigenfunctions to arbitrary Borel sets on the surface, following the formulation of Eswarathasan and Pramanik. We achieve this by proving a variable coefficient version of a weighted Fourier extension estimate of Du and Zhang. Our results naturally unify the $L^p(M)$ estimates of Sogge and the $L^p(γ)$ restriction bounds of Burq, Gérard, and Tzvetkov, and are sharp for all $p \geq 2$, up to a $λ^\varepsilon$ loss. Second, we derive sharp estimates for the restriction of eigenfunctions to tubular neighborhoods of a curve with nonvanishing geodesic curvature. These estimates are closely related to a variable-coefficient version of the Mizohata--Takeuchi conjecture, providing new insights into eigenfunction concentration phenomena. |
| title | Refined $L^p$ restriction estimate for eigenfunctions on Riemannian surfaces |
| topic | Analysis of PDEs Classical Analysis and ODEs Spectral Theory |
| url | https://arxiv.org/abs/2411.01577 |