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arXiv 1107.3305hep-th
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N=2共形超引力理论中的电荷和磁荷

Electric and magnetic charges in N=2 conformal supergravity theories

Bernard de Wit, Maaike van Zalk

摘要:

一般的拉格朗日被构造为N=2共形超引力理论在四维时空中涉及规范群与阿贝尔和/或非阿贝尔的电和磁荷。电荷被编码在规范群嵌入张量中。由规范相互作用引起的标量势在这个张量中是二次的,并且,当嵌入张量被视为spuronic量时,它在形式上是关于电/磁对偶性的协变。这一工作为研究物质耦合N=2超引力理论的规范相互作用引起的任何形变建立了一个一般框架。作为一个应用,在最大对称时空中的完全和剩余超对称实现进行了评论。此外,对$\mathrm{AdS}_2\times S^2$时空中的超对称解给出了一般的分类。事实证明,这些解允许八个或四个超对称。有了四个超对称,旋量参数是$\mathrm{AdS}_2$的基灵旋量,它们在$S^2$上是常数,因此它们不带自旋,而玻色子背景是旋转不变的。

英文摘要:

General Lagrangians are constructed for N=2 conformal supergravity theories in four space-time dimensions involving gauge groups with abelian and/or non-abelian electric and magnetic charges. The charges are encoded in the gauge group embedding tensor. The scalar potential induced by the gauge interactions is quadratic in this tensor, and, when the embedding tensor is treated as a spurionic quantity, it is formally covariant with respect to electric/magnetic duality. This work establishes a general framework for studying any deformation induced by gauge interactions of matter-coupled N=2 supergravity theories. As an application, full and residual supersymmetry realizations in maximally symmetric space-times are reviewed. Furthermore, a general classification is presented of supersymmetric solutions in $\mathrm{AdS}_2\times S^2$ space-times. As it turns out, these solutions allow either eight or four supersymmetries. With four supersymmetries, the spinorial parameters are Killing spinors of $\mathrm{AdS}_2$ that are constant on $S^2$, so that they carry no spin, while the bosonic background is rotationally invariant.

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