The Anisotropic Calderón Problem for High Fixed Frequency

.We consider Schrödinger operators at a fixed high frequency on simply connected compact Riemannian manifolds with nonpositive sectional curvatures and smooth strictly convex boundaries. We prove that the Dirichlet-to-Neumann map uniquely determines the potential.Keywordsanisotropic Calderón problemhigh frequencygeodesic ray transformMSC codes35J2558J90