Periodic Jacobi operator with finitely supported perturbations: The inverse resonance problem

Abstract

We consider a periodic Jacobi operator H with finitely supported perturbations on Z . We solve the inverse resonance problem: we prove that the mapping from finitely supported perturbations to the scattering data, the inverse of the transmission coefficient and the Jost function on the right half-axis, is one-to-one and onto. We consider the problem of reconstruction of the scattering data from all eigenvalues, resonances and the set of zeros of R − ( λ ) + 1 , where R − is the reflection coefficient.