BETHE-ANSATZ, YANG-BAXTER EQUATION AND FACTORIZATION OF S-MATRIX

[摘要] In this communication we remodel the analysis of the Bethe-ansatz for the nonlinearSchrdinger equation in an external field. We have constructed the n-particle wavefunction, demonstrated the factorization of the S-matrix for n=2, 3 and 4 with theimportant difference that the basic 2-body S-matrix is not a single matrix but twomatrices, and verified the Yang-Baxter equation.

[学科分类] 物理（综合）