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arXiv 1211.7296hep-thgr-qc
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N=2,d=4超引力黑洞的Freudenthal规范对称性

The Freudenthal gauge symmetry of the black holes of N=2,d=4 supergravity

Pietro Galli, Patrick Meessen, Tomas Ortin

摘要:

我们表明,黑洞解的变量H^M,这是在超对称的情况下的调和函数的表示是不唯一的,由于存在一个局部对称的有效作用。这种对称性是最初为黑洞电荷引入的离散弗赖登塔尔变换的连续(和局部)推广,可以用来重写一个解的物理场,使之成为完全不同的函数。

英文摘要:

We show that the representation of black-hole solutions in terms of the variables H^M which are harmonic functions in the supersymmetric case is non-unique due to the existence of a local symmetry in the effective action. This symmetry is a continuous (and local) generalization of the discrete Freudenthal transformations initially introduced for the black-hole charges and can be used to rewrite the physical fields of a solution in terms of entirely different-looking functions.

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