Exact surface energy and elementary excitations of the XXX spin-1/2 chain with arbitrary non-diagonal boundary fields

被引：0
|
作者：
Dong, Jia-Sheng [1 ]
Lu, Pengcheng [1 ,2 ]
Sun, Pei [3 ,4 ,5 ]
Qiao, Yi [2 ,4 ,5 ]
Cao, Junpeng [2 ,4 ,6 ,7 ]
Hao, Kun [1 ,4 ,5 ]
Yang, Wen-Li [1 ,4 ,5 ]
机构：
[1] Northwest Univ, Inst Modern Phys, Xian 710127, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[3] Northwest Univ, Sch Phys, Xian 710127, Peoples R China
[4] Peng Huanwu Ctr Fundamental Theory, Xian 710127, Peoples R China
[5] Shaanxi Key Lab Theoret Phys Frontiers, Xian 710127, Peoples R China
[6] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[7] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
来源：
CHINESE PHYSICS B | 2023年 / 32卷 / 01期
基金：
中国博士后科学基金; 中国国家自然科学基金; 国家重点研发计划;
关键词：
quantum spin chain; integrable systems; Bethe ansatz; MODEL;
D O I：
10.1088/1674-1056/ac981f
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the physical properties of the XXX spin-1/2 chain with arbitrary non-diagonal boundary fields. By using a combination of numerical analysis and analytical method, we obtain the surface energy and elementary excitations of the model. It shows that the contributions of the two boundary fields to the surface energy are additive. We also find that there exists a kind of excitations related to the boundary string.
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页数：10
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