Bethe ansatz solutions of the 1D extended Hubbard-model  

作　　者：侯海洋 孙佩 乔艺 许小甜 张鑫 杨涛 Haiyang Hou;Pei Sun;Yi Qiao;Xiaotian Xu;Xin Zhang;Tao Yang(Institute of Modern Physics,Northwest University,Xian 710127,China;Shaanxi Key Laboratory for Theoretical Physics Frontiers,Xian 710127,China;Beijing National Laboratory for Condensed Matter Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]Institute of Modern Physics,Northwest University,Xian 710127,China [2]Shaanxi Key Laboratory for Theoretical Physics Frontiers,Xian 710127,China [3]Beijing National Laboratory for Condensed Matter Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Communications in Theoretical Physics》2024年第4期43-50,共8页理论物理通讯（英文版）

基　　金：Financial support from the National Natural Science Foundation of China(Grant Nos.12105221,12175180,12074410,12047502,11934015,11975183,11947301,11775177,11775178 and 11774397);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB33000000);the Shaanxi Fundamental Science Research Project for Mathematics and Physics(Grant No.22JSZ005);the Major Basic Research Program of Natural Science of Shaanxi Province(Grant Nos.2021JCW-19,2017KCT-12 and 2017ZDJC-32);the Scientific Research Program Funded by the Shaanxi Provincial Education Department(Grant No.21JK0946);the Beijing National Laboratory for Condensed Matter Physics(Grant No.202162100001);the Double First-Class University Construction Project of Northwest University is gratefully acknowledged.

摘　　要：We construct an integrable 1D extended Hubbard model within the framework of the quantum inverse scattering method.With the help of the nested algebraic Bethe ansatz method,the eigenvalue Hamiltonian problem is solved by a set of Bethe ansatz equations,whose solutions are supposed to give the correct energy spectrum.

关 键 词：quantum integrable system Bethe ansatz T-Q relation Hubbard model 

分 类 号：O412.3[理学—理论物理]