Ground and excited states of even-numbered Hubbard ring at half-filling: comparison of the extended Gutzwiller approach with exact diagonalization.

Fang, Yimei; Zhang, Feng; Ye, Zhuo; Zhang, Han; Lu, Wen-Cai; Wu, Shunqing; Yao, Yong-Xin; Wang, Cai-Zhuang; Ho, Kai-Ming.

Afiliação

Fang Y; Department of Physics, OSED, Key Laboratory of Low Dimensional Condensed Matter Physics (Department of Education of Fujian Province), Jiujiang Research institute, Xiamen University, Xiamen 361005, People's Republic of China.
Zhang F; Division of Materials Science and Engineering, Ames National Laboratory, Ames, IA 50011, United States of America.
Ye Z; Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, United States of America.
Zhang H; Division of Materials Science and Engineering, Ames National Laboratory, Ames, IA 50011, United States of America.
Lu WC; College of Physics, Qingdao University, Qingdao, Shandong 266071, People's Republic of China.
Wu S; College of Physics, Qingdao University, Qingdao, Shandong 266071, People's Republic of China.
Yao YX; Department of Physics, OSED, Key Laboratory of Low Dimensional Condensed Matter Physics (Department of Education of Fujian Province), Jiujiang Research institute, Xiamen University, Xiamen 361005, People's Republic of China.
Wang CZ; Division of Materials Science and Engineering, Ames National Laboratory, Ames, IA 50011, United States of America.
Ho KM; Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, United States of America.