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arXiv 1802.06555hep-th
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关于简化幻数超引力理论的代数结构

On an Algebraic Structure of Dimensionally Reduced Magical Supergravity Theories

Shin Fukuchi, Shun'ya Mizoguchi

摘要:

我们研究了三维神奇超引力的代数结构。我们表明,如果在超-Ehlers分解的准共形群的生成元之间的对易关系是在一个特定的形式,那么人们总是可以找到一个参数化的组元素在各种3d玻色场,再现相应的神奇超引力的3d约化拉格朗日。这提供了一个统一的处理所有神奇的超引力理论在寻找三维维约化拉格朗日和特定陪集非线性西格玛模型之间的显式关系。我们还验证了$E_{6(+2)}$的对易关系,$\mathbb{A}=\mathbb{C}$的准共形群,确实满足这一性质,允许的代数解释的结构常数和标量场函数是在$F_{4(+4)}$神奇的超引力。

英文摘要:

We study an algebraic structure of magical supergravities in three dimensions. We show that if the commutation relations among the generators of the quasi-conformal group in the super-Ehlers decomposition are in a particular form, then one can always find a parameterization of the group element in terms of various 3d bosonic fields that reproduces the 3d reduced Lagrangian of the corresponding magical supergravity. This provides a unified treatment of all the magical supergravity theories in finding explicit relations between the 3d dimensionally reduced Lagrangians and particular coset nonlinear sigma models. We also verify that the commutation relations of $E_{6(+2)}$, the quasi-conformal group for $\mathbb{A}=\mathbb{C}$, indeed satisfy this property, allowing the algebraic interpretation of the structure constants and scalar field functions as was done in the $F_{4(+4)}$ magical supergravity.

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