Bootstrap Prediction of Symmetry for a Soluble Static Model

Abstract

The Huang‐Low bootstrap criterion of self‐consistency, in the form of Levinson's theorem, is imposed on the exact solutions of the two‐channel Low equation with an arbitrary crossing matrix. It is found that this condition, together with a number of dynamical conditions are sufficient to restrict the continuous crossing‐matrix parameter to discrete values corresponding to an SU 2 symmetry.