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arXiv 0802.2040hep-th
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11维和II型超引力中的不变Killing旋量

Invariant Killing spinors in 11D and type II supergravities

U. Gran, J. Gutowski, G. Papadopoulos

摘要:

我们提出了所有的各向同性群和相关的$Σ$群,直到离散的身份的组件连接到身份,旋量的11维和II型超引力。$Σ$群是自旋群和适当的低维超引力理论的R对称群的产物。以SU(4)不变旋量为例,我们证明了$Σ$群以及由紧化产生的低维超引力理论的R对称群具有不连通的分量。这些导致离散的对称群让人想起R-宇称。我们研究的作用,断开组件的$Σ$组中的选择杀死旋量的代表,并在紧化的背景下。

英文摘要:

We present all isotropy groups and associated $Σ$ groups, up to discrete identifications of the component connected to the identity, of spinors of eleven-dimensional and type II supergravities. The $Σ$ groups are products of a Spin group and an R-symmetry group of a suitable lower dimensional supergravity theory. Using the case of SU(4)-invariant spinors as a paradigm, we demonstrate that the $Σ$ groups, and so the R-symmetry groups of lower-dimensional supergravity theories arising from compactifications, have disconnected components. These lead to discrete symmetry groups reminiscent of R-parity. We examine the role of disconnected components of the $Σ$ groups in the choice of Killing spinor representatives and in the context of compactifications.

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