Exact physical quantities of a competing spin chain in the thermodynamic limit

被引：0
|
作者：
Lu, Pengcheng [1 ,2 ]
Qiao, Yi [1 ,2 ]
Cao, Junpeng [2 ,3 ,4 ,5 ]
Yang, Wen-Li [1 ,5 ,6 ]
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] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[4] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
[5] Peng Huanwu Ctr Fundamental Theory, Xian 710127, Peoples R China
[6] Shaanxi Key Lab Theoret Phys Frontiers, Xian 710127, Peoples R China
来源：
SCIPOST PHYSICS | 2023年 / 15卷 / 02期
基金：
中国博士后科学基金; 中国国家自然科学基金; 澳大利亚研究理事会;
关键词：
ONE-DIMENSIONAL SYSTEM; MATRIX; MODELS; BOSONS; STATE;
D O I：
10.21468/SciPostPhys.15.2.060
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the exact physical quantities of a competing spin chain which contains many interesting and meaningful couplings including the nearest neighbor, next nearest neighbor, chiral three spins, Dzyloshinsky-Moriya interactions and unparallel boundary magnetic fields in the thermodynamic limit. We obtain the density of zero roots, surface energies and elementary excitations in different regimes of model parameters. Due to the competition of various interactions, the surface energy and excited spectrum show many different pictures from those of the Heisenberg spin chain.
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页数：18
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