On Factorization of Coupled Channel Scattering S Matrices
Fang Ke-Jie · Communications in Theoretical Physics · 2007
We investigate the problem on how to factorize a coupled channel scattering S matrix into a product of simple S matrices. Simple S matrix solutions are found, respecting unitarity, analyticity and being real analytic. The phase shift and its physical meaning produced by these simple S matrices are discussed.