Ground state of the quantum symmetric finite-size XXZ spin chain with anisotropy parameter Δ=1/2

被引：25
|
作者：
Fridkin, V [1 ]
Stroganov, Y
Zagier, D
机构：
[1] Kyoto Univ, Math Sci Res Inst, Kyoto 606, Japan
[2] Inst High Energy Phys, Moscow, Russia
[3] Max Planck Inst Math, D-53225 Bonn, Germany
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2000年 / 33卷 / 13期
关键词：
D O I：
10.1088/0305-4470/33/13/101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We find an analytic solution of the Bethe Ansatz equations for the special case of a finite XXZ spin chain with free boundary conditions and with a complex surface field which provides for U-q(sl(2)) symmetry of the Hamiltonian. More precisely, we find one nontrivial solution, corresponding to the ground state of the system with anisotropy parameter Delta = 1/2 corresponding to q(3) = -1.
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页码：L121 / L125
页数：5
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