Nested Bethe Ansatz for Spin Ladder Model with Open Boundary Conditions
The nested Bethe ansatz (BA) method is applied to find the eigenvalues and the eigenvectors of the transfer matrix for spin-ladder model with open boundary conditions. Based on the reflection equation, we find the general diagonal solution, which determines the generalboundary interaction in the Hamiltonian. We introduce the spin-ladder model with open boundary conditions. By finding the solution K± of the reflection equation which determines the nontrivial boundary terms in the Hamiltonian, we diagonalize the transfer matrix of the spin-ladder model with open boundary conditions in the framework of nested BA.
作 者： WU Jun-fang ZHANG Chun-min YUE Rui-Hong LI Run-Ling 作者单位： WU Jun-fang(Department of Physics, Xi'an Jiao Tong University, Xi'an 710049, China;Department of Physics, Xi'an University of Engineering Science and Technology, Xi'an 710048, China)ZHANG Chun-min(Department of Physics, Xi'an Jiao Tong University, Xi'an 710049, China)
YUE Rui-Hong(Institute of Modern Physics, Northwest University, Xi'an 710069, China)
LI Run-Ling(Missile Institute, Air Force Engineering University, Xi'an 710051, China)
刊 名： 理论物理通讯（英文版） ISTIC SCI 英文刊名： COMMUNICATIONS IN THEORETICAL PHYSICS 年，卷(期)： 2005 43(4) 分类号： 关键词： integrable model coordinate Bethe ansatz quantum inverse scattering method Bethe ansatz equation nested Bethe ansatz