On the lowest eigenvalue of the Hodge Laplacian on compact,negatively curved domains |
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Authors: | Alessandro Savo |
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Institution: | (1) Dipartimento di Metodi e Modelli Matematici, Università di Roma, La Sapienza, Via Antonio Scarpa 16, Rome, 00161, Italy |
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Abstract: | We study the first eigenvalue of the Laplacian acting on differential forms on a compact Riemannian domain, for the absolute
or relative boundary conditions. We prove a series of lower bounds when the domain is starlike or p-convex and the ambient
manifold has pinched negative curvature. The bounds are sharp for starlike domains. We then compute the asymptotics of the
first eigenvalue of hyperbolic balls of large radius. Finally, we give lower bounds also for Euclidean domains.
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Keywords: | Laplacian on forms Eigenvalues Negative curvature |
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