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arXiv 0708.3845hep-th
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D1-D5-KK系统的非超对称微观态

Non-supersymmetric microstates of the D1-D5-KK system

Stefano Giusto, Simon F. Ross, Ashish Saxena

摘要:

在六环面上紧化的IIB型超引力中,我们构造了一个离散的光滑非超对称三荷几何族,它包含D1膜、D5膜和Kaluza-Klein荷,可以解释为膜系统某些特殊状态的几何描述.这些解决方案是渐近平坦的四维,并概括以前的超对称解决方案。这些解具有与先前在五维中携带D1和D5膜电荷的非超对称光滑解定性相似的结构,并且确实可以被看作是位于卡鲁扎-克莱因方程核心的五维系统。几何形状是平滑的,没有地平线,也没有封闭的时间型曲线。与五维情形的一个显著区别是,四维几何没有能域。

英文摘要:

We construct a discrete family of smooth non-supersymmetric three charge geometries carrying D1 brane, D5 brane and Kaluza-Klein monopole charges in Type IIB supergravity compactified on a six-torus, which can be interpreted as the geometric description of some special states of the brane system. These solutions are asymptotically flat in four dimensions, and generalise previous supersymmetric solutions. The solutions have a qualitatively similar structure to previous non-supersymmetric smooth solutions carrying D1 and D5 brane charges in five dimensions, and indeed can be viewed as the five-dimensional system placed at the core of a Kaluza-Klein monopole. The geometries are smooth, free of horizons and do not have closed timelike curves. One notable difference from the five-dimensional case is that the four-dimensional geometry has no ergoregion.

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