Factorization of the transition matrix for the general Jacobi system

Abstract

The Jacobi system on a full-line lattice is considered when it contains additional weight factors. A factorization formula is derived expressing the scattering from such a generalized Jacobi system in terms of the scattering from its fragments. This is done by writing the transition matrix for the generalized Jacobi system as an ordered matrix product of the transition matrices corresponding to its fragments. The resulting factorization formula resembles the factorization formula for the Schrödinger equation on the full line. Mathematics Subject Classification (2010): 39A70 47A40 47A68 47B36 47B39Short title: Factorization for the Jacobi system