开边界条件下Fateev-Zamolodchikov模型的潜藏定域规范不变性

HIDDEN LOCAL GAUGE INVARIANCE IN FATEEV-ZAMOLO-DCHIKOV QUANTUM SPIN CHAIN UNDER OPEN BOUNDARY CONDITIONS

在量子反散射方法框架内详细研究了开边界条件下Fateev-Zamolodchikov模型的潜藏定域规范不变性。结果表明,尽管模型Hamiltonian量及其本征矢明显规范相关,但能量本征值和Bethe方程却是规范不变的。

Hidden local gauge invariance in Fatteev-Zamolodchikov quantum spin chain under open bondary conditions is studied in the framework of quantum inverse scattering method (QISM). Our results show that the Hamiltonian and its eigenvectors are explicitly gauge-dependent while the energy eigenvalues and the Bethe equations are gauge-invariant.