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arXiv 1001.3157hep-th
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1/8 BPS黑洞复合材料

1/8 BPS black hole composites

Guillaume Bossard

摘要:

我们证明了复合稳态黑洞的1/8 BPS条件可以改写为与黑洞的Noether荷所在的幂零轨道相关联的一阶微分方程组。解这些方程,我们证明了最一般的1/8 BPS黑洞复合体是与四元数相关的理论的N=2截断的解。这个一阶微分方程组推广到对称模空间中N=2,4超引力理论中视界处中心荷为零的非BPS解。我们解决这些方程的例外N=2超引力与八元数。

英文摘要:

We show that the 1/8 BPS condition for composite stationary black holes can be rewritten as a first order system of differential equations associated to the nilpotent orbit in which lie the Noether charges of the black holes. Solving these equations, we prove that the most general 1/8 BPS black hole composites are solutions of the N=2 truncation of the theory associated to the quaternions. This system of first order differential equations generalises to the non-BPS solutions with a vanishing central charge at the horizon in N=2, 4 supergravity theories with a symmetric moduli space. We solve these equations for the exceptional N=2 supergravity associated to the octonions.

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