1. $L^p$-spectral theory for the Laplacian on forms
- Author
-
Charalambous, Nelia and Lu, Zhiqin
- Subjects
Mathematics - Differential Geometry ,Mathematics - Analysis of PDEs ,Mathematics - Spectral Theory ,58J50 - Abstract
In this article, we find sufficient conditions on an open Riemannian manifold so that a Weyl criterion holds for the $L^p$-spectrum of the Laplacian on $k$-forms, and also prove the decomposition of the $L^p$-spectrum depending on the order of the forms. We then show that the resolvent set of an operator such as the Laplacian on $L^p$ lies outside a parabola whenever the volume of the manifold has an exponential volume growth rate, removing the requirement on the manifold to be of bounded geometry. We conclude by providing a detailed description of the $L^p$ spectrum of the Laplacian on $k$-forms over hyperbolic space.
- Published
- 2024