The Inverse Problem for the Dirichlet-to-Neumann map on Lorentzian manifolds

Abstract

We consider the Dirichlet-to-Neumann map $\Lambda$ on a cylinder-like Lorentzian manifold related to the wave equation related to the metric $g$, a magnetic field $A$ and a potential $q$. We show that we can recover the jet of $g,A,q$ on the boundary from $\Lambda$ up to a gauge transformation in a stable way. We also show that $\Lambda$ recovers the following three invariants in a stable way: the lens relation of $g$, and the light ray transforms of $A$ and $q$. Moreover, $\Lambda$ is an FIO away from the diagonal with a canonical relation given by the lens relation. We present applications for recovery of $A$ and $q$ in a logarithmically stable way in the Minkowski case, and uniqueness with partial data.

26 pages, 2 figure

References in corpus (4)

• On the inverse problem of finding cosmic strings and other topological defects
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• Stable determination of generic simple metrics from the hyperbolic Dirichlet-to-Neumann map
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