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arXiv 1405.7855nlin.SIhep-thmath-phmath.MP
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Inozemtsev椭圆自旋链可积性的新观点

A new perspective on the integrability of Inozemtsev's elliptic spin chain

Federico Finkel, Artemio Gonzalez-Lopez

摘要:

本文的目的是研究从另一个角度来看,可积性的自旋链与长程椭圆相互作用的Inozemtsev介绍。我们的分析依赖于一些完善的描述量子系统的混沌与可积行为的结构,这些结构是根据其光谱的统计特性制定的。更确切地说,我们研究的(展开)频谱的连续水平的分布,频谱波动的功率谱,平均简并,和一个经典的顶点模型的等价性。我们的结果是一致的一般共识,这个模型是可积的,它是更接近在这方面的海森堡链比它的三角极限(Haldane-Shastry链)。另一方面,我们提出了一些数值和分析的证据表明,Inozemtsev的链的水平密度是渐近高斯的自旋数趋于无穷大,是与Haldane-Shastry链的情况下。我们也能够计算分析的平均值和标准偏差的频谱,表明其渐近行为与Haldane-Shastry链。

英文摘要:

The aim of this paper is studying from an alternative point of view the integrability of the spin chain with long-range elliptic interactions introduced by Inozemtsev. Our analysis relies on some well-established conjectures characterizing the chaotic vs. integrable behavior of a quantum system, formulated in terms of statistical properties of its spectrum. More precisely, we study the distribution of consecutive levels of the (unfolded) spectrum, the power spectrum of the spectral fluctuations, the average degeneracy, and the equivalence to a classical vertex model. Our results are consistent with the general consensus that this model is integrable, and that it is closer in this respect to the Heisenberg chain than to its trigonometric limit (the Haldane-Shastry chain). On the other hand, we present some numerical and analytical evidence showing that the level density of Inozemtsev's chain is asymptotically Gaussian as the number of spins tends to infinity, as is the case with the Haldane-Shastry chain. We are also able to compute analytically the mean and the standard deviation of the spectrum, showing that their asymptotic behavior coincides with that of the Haldane-Shastry chain.

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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