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arXiv 1702.05100hep-th
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高自旋与Yangian对称性

Higher Spins and Yangian Symmetries

Matthias R. Gaberdiel, Rajesh Gopakumar, Wei Li, Cheng Peng

摘要:

详细地建立了玻色高自旋${\cal W}_\infty[λ]$代数、$\mathfrak{gl}_{1}$的仿射Yangian和SH $^c$代数之间的关系.对于一般的$λ$,我们发现明确的表达式为低的${\cal W}_\infty[λ]$模式的仿射杨格生成器,并从中推导出精确识别之间的$λ$和仿射杨格的参数。此外,对于对应于$λ=0$和$λ=1$的自由场情形,我们给出了仿射Yangian生成元在自由场下的封闭形式表达式.有趣的是,${\cal W}_\infty$模式和仿射杨格的模式之间的关系是一个非局部的,在一般情况下。我们还建立了仿射Yangian和SH $^c$生成元之间的显式字典。鉴于杨代数是可积性的标志,这些鉴定应该铺平道路,揭示可积和更高的自旋对称性之间的关系。

英文摘要:

The relation between the bosonic higher spin ${\cal W}_\infty[λ]$ algebra, the affine Yangian of $\mathfrak{gl}_{1}$, and the SH$^c$ algebra is established in detail. For generic $λ$ we find explicit expressions for the low-lying ${\cal W}_\infty[λ]$ modes in terms of the affine Yangian generators, and deduce from this the precise identification between $λ$ and the parameters of the affine Yangian. Furthermore, for the free field cases corresponding to $λ=0$ and $λ=1$ we give closed-form expressions for the affine Yangian generators in terms of the free fields. Interestingly, the relation between the ${\cal W}_\infty$ modes and those of the affine Yangian is a non-local one, in general. We also establish the explicit dictionary between the affine Yangian and the SH$^c$ generators. Given that Yangian algebras are the hallmark of integrability, these identifications should pave the way towards uncovering the relation between the integrable and the higher spin symmetries.

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