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arXiv 2603.24656hep-th
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Vasiliev Grassmannian的正交Grassmannian

The Vasiliev Grassmannian

University of Pennsylvania(宾夕法尼亚大学);Institute for Advanced Study, Princeton(普林斯顿高等研究院)

Shounak De, Hayden Lee

AI总结:

研究通过正交Grassmannian计算de Sitter空间中Vasiliev高自旋引力的四点函数,揭示其与Veneziano幅场论极限的相似性。

摘要:

我们表达出de Sitter空间中最小Vasiliev高自旋引力的标量四点函数为正交Grassmannian OGr(4,8)上的积分。完整的交叉对称VasilievGrassmannian相关子式由(S²+T²+U²)/(STU)给出,其中S、T、U是Grassmannian Mandelstam变量。值得注意的是,尽管源自无限质量less高自旋塔的张力less极限,其形式却与Veneziano幅的场论极限相同。我们通过评估Grassmannian轮廓积分并将其与动量空间结果匹配来验证该公式,并直接在Grassmannian空间中分析其奇点和留数。

英文摘要:

We express the scalar four-point function of minimal Vasiliev higher-spin gravity in de Sitter space as an integral over the orthogonal Grassmannian OGr(4,8). The full crossing-symmetric Vasiliev Grassmannian correlator is given by $(S^2+T^2+U^2)/(STU)$, where $S$, $T$, $U$ are the Grassmannian Mandelstam variables. Remarkably, this has the same form as the field-theory limit of the Veneziano amplitude, despite arising from the opposite, tensionless limit of an infinite massless higher-spin tower. We verify the formula by evaluating the Grassmannian contour integral and matching it to the momentum-space result, and analyze its singularities and residues directly in Grassmannian space.

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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