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arXiv 1405.7451nlin.SImath-phmath.MP
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关于自旋为1/2的Richardson-Gaudin系统的量子可积性的边界

On the boundaries of quantum integrability for the spin-1/2 Richardson-Gaudin system

Inna Lukyanenko, Phillip Isaac, Jon Links

摘要:

我们讨论了Sklyanin的边界量子逆散射方法的一个推广版本,适用于自旋为1/2,三角sl(2)的情况下,对于这两个扭曲的周期和边界结构作为限制情况下获得。然后,我们调查这种方法的准经典极限,导致一组相互交换的保守运营商,我们称之为三角,自旋1/2 Richardson-Gaudin系统。我们证明了三角系统的保守算子集的有理极限是等价的,通过变量的变化,重新标度,和一个基础变换,原来的三角保守算子集。此外,我们证明了扭周期和边界结构是等价的三角的情况下,但不是在合理的限制。

英文摘要:

We discuss a generalised version of Sklyanin's Boundary Quantum Inverse Scattering Method applied to the spin-1/2, trigonometric sl(2) case, for which both the twisted-periodic and boundary constructions are obtained as limiting cases. We then investigate the quasi-classical limit of this approach leading to a set of mutually commuting conserved operators which we refer to as the trigonometric, spin-1/2 Richardson-Gaudin system. We prove that the rational limit of the set of conserved operators for the trigonometric system is equivalent, through a change of variables, rescaling, and a basis transformation, to the original set of trigonometric conserved operators. Moreover we prove that the twisted-periodic and boundary constructions are equivalent in the trigonometric case, but not in the rational limit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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