Anisotropic Heisenberg magnet with long-range interactions. Integrability and phase structure

被引：0
|
作者：
Karimipour, V
Khorrami, M
机构：
[1] Sharif Univ Technol, Dept Phys, Tehran 11365, Iran
[2] Inst Studies Theoret Phys & Math, Tehran 19395, Iran
[3] Inst Adv Studies Basic Sci, Zanjan 45195, Iran
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 1999年 / 38卷 / 03期
关键词：
Magnetic Field; Field Theory; Elementary Particle; Quantum Field Theory; Phase Structure;
D O I：
10.1023/A:1026681624348
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show that the xxz Heisenberg magnet with long-range interactions in a magnetic field, is integrable both classically and quantum mechanically. Explicit expressions are given for the involutive integrals of the motion. The nature of the spectrum and the ground state are clarified and the partition function is calculated exactly in the thermodynamic limit. A detailed study of the phase structure of the system is also performed.
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页码：971 / 984
页数：14
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