• Corpus ID: 119579586

Exact solution of an integrable $J_1-J_2$ spin chain model

  title={Exact solution of an integrable \$J\_1-J\_2\$ spin chain model},
  author={Yi Qiao and Zhirong Xin and Junpeng Cao and Wen-Li Yang and Kangjie Shi and Yupeng Wang},
  journal={arXiv: Mathematical Physics},
An integrable Heisenberg spin chain with nearest-neighbour couplings, next-nearest-neighbour couplings and Dzyaloshinski-Moriya interacton is constructed. The integrability of the model is proven. Based on the Bethe Ansatz solutions, the ground state and the elementary excitations are studied. It is shown that the spinon excitation spectrum of the present system possesses a novel triple arched structure. The method provided in this paper is general to construct new integrable models with next…