paper

Limiting Carleman weights and anisotropic inverse problems

arXiv:0803.3508 · doi:10.1007/s00222-009-0196-4

Abstract

In this article we consider the anisotropic Calderon problem and related inverse problems. The approach is based on limiting Carleman weights, introduced in Kenig-Sjoestrand-Uhlmann (Ann. of Math. 2007) in the Euclidean case. We characterize those Riemannian manifolds which admit limiting Carleman weights, and give a complex geometrical optics construction for a class of such manifolds. This is used to prove uniqueness results for anisotropic inverse problems, via the attenuated geodesic X-ray transform. Earlier results in dimension were restricted to real-analytic metrics.

58 pages

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