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arXiv 0903.1646hep-th
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巨引力子自旋开链的Bethe方程

Bethe ansatz equations for open spin chains from giant gravitons

Rafael I. Nepomechie

摘要:

研究了弱耦合下描述Y=0巨引力子膜标量扇区的开自旋链。通过构造转移矩阵,给出了SU(2)和SU(3)扇区可积性的直接证明。我们确定这些转移矩阵的特征值的根相应的Bethe anomaly方程(BAE)。基于这些结果,我们提出了全SO(6)扇区的BAE。我们发现,在弱耦合限制,最近提出的全回路BAE基本上同意在本工作中提出的。

英文摘要:

We investigate the open spin chain describing the scalar sector of the Y=0 giant graviton brane at weak coupling. We provide a direct proof of integrability in the SU(2) and SU(3) sectors by constructing the transfer matrices. We determine the eigenvalues of these transfer matrices in terms of roots of the corresponding Bethe ansatz equations (BAEs). Based on these results, we propose BAEs for the full SO(6) sector. We find that, in the weak-coupling limit, the recently-proposed all-loop BAEs essentially agree with those proposed in the present work.

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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