Eigenvalue Estimates on Weighted Manifolds.

We derive various eigenvalue estimates for the Hodge Laplacian acting on differential forms on weighted Riemannian manifolds. Our estimates unify and extend various results from the literature and provide a number of geometric applications. In particular, we derive an inequality which relates the eigenvalues of the Jacobi operator for f -minimal hypersurfaces and the spectrum of the Hodge Laplacian.