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arXiv 2408.03365hep-th
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长程相互作用拯救杨-巴克斯特方程

Long-range to the Rescue of Yang-Baxter

Deniz N Bozkurt, Juan Miguel Nieto García, Elli Pomoni

AI总结:

本文针对四维N=2超共形场论对应的自旋链模型,提出一种长程解方法解决三磁振子本征值问题,其散射系数满足无穷层次杨-巴克斯特方程,并将坐标贝特拟设推广到置换对称性破缺情形。

摘要:

我们研究了一个自旋链模型,该模型刻画了四维空间中一个典型的 $\mathcal{N}=2$ 超共形场论(SCFT)的单圈谱问题。迄今为止,这一自旋链模型仍然难以理解;坐标贝特拟设(coordinate Bethe Ansatz)从三磁振子开始就无法给出解,因为两磁振子散射系数不满足杨-巴克斯特方程。在本文中,我们找到了三磁振子本征值问题的一个长程解。值得注意的是,我们解中的散射系数连同位置依赖修正,满足一个无穷层次的杨-巴克斯特方程。我们求解三磁振子问题的方法本身也很有意义,它将坐标贝特拟设方法推广到了置换对称性被破坏的情形。

英文摘要:

We study the spin chain model which captures the one-loop spectral problem of a prototypical example of an $\mathcal{N}=2$ SCFT in four dimensions. Up to date, this spin chain model remains unfathomable; the coordinate Bethe Ansatz does not lead to a solution from three magnons on, as the Yang-Baxter equation is not satisfied by the two-magnon scattering coefficients. In this paper, we find a long-range solution to the eigenvalue problem for three magnons. Remarkably, the scattering coefficients of our solution together with the position-dependent corrections, obey an infinite tower of Yang-Baxter equations. Our method of solving the three-magnon problem is interesting in its own right and generalizes the coordinate Bethe Ansatz approach to cases where the permutation symmetry is broken.

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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