A reverse Faber-Krahn inequality for the magnetic Laplacian
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917848212832256 |
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| author | Colbois, Bruno Léna, Corentin Provenzano, Luigi Savo, Alessandro |
| author_facet | Colbois, Bruno Léna, Corentin Provenzano, Luigi Savo, Alessandro |
| contents | We consider the first eigenvalue of the magnetic Laplacian in a bounded and simply connected planar domain, with uniform magnetic field and Neumann boundary conditions. We investigate the reverse Faber-Krahn inequality conjectured by S. Fournais and B. Helffer, stating that this eigenvalue is maximized by the disk for a given area. Using the method of level lines, we prove the conjecture for small enough values of the magnetic field (those for which the corresponding eigenfunction in the disk is radial). |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_11336 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A reverse Faber-Krahn inequality for the magnetic Laplacian Colbois, Bruno Léna, Corentin Provenzano, Luigi Savo, Alessandro Spectral Theory Mathematical Physics Analysis of PDEs 35P15, 35J25, 49Q10, 81Q10 We consider the first eigenvalue of the magnetic Laplacian in a bounded and simply connected planar domain, with uniform magnetic field and Neumann boundary conditions. We investigate the reverse Faber-Krahn inequality conjectured by S. Fournais and B. Helffer, stating that this eigenvalue is maximized by the disk for a given area. Using the method of level lines, we prove the conjecture for small enough values of the magnetic field (those for which the corresponding eigenfunction in the disk is radial). |
| title | A reverse Faber-Krahn inequality for the magnetic Laplacian |
| topic | Spectral Theory Mathematical Physics Analysis of PDEs 35P15, 35J25, 49Q10, 81Q10 |
| url | https://arxiv.org/abs/2403.11336 |