Special Session 80: Inverse Problems and Imaging

The Tensorial X-ray Transform on Asymptotically Conic Manifolds

Qiuye Jia
Stanford University
Peoples Rep of China
Co-Author(s):    Andras Vasy
Abstract:
In this talk I will discuss the invertibility of the geodesic X-ray transform on one forms and 2-tensors on asymptotically conic manifolds, up to the natural obstruction, allowing existence of certain kinds of conjugate points. We use the 1-cusp pseudodifferential operator algebra and its semiclassical foliation version introduced and used by Vasy and Zachos, who showed the same type invertibility on functions. The complication of the invertibility of the tensorial X-ray transform, compared with X-ray transform on functions, is caused by the natural kernel of the transform consisting of `potential tensors`. We overcome this by arranging a modified solenoidal gauge condition, under which we have the invertibility of the X-ray transform. This can be considered as a linearized version of the boundary rigidity problem.