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arXiv 1807.07768hep-th
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D4 $-$ D8膜系统中的表面缺陷

Surface defects in the D4 $-$ D8 brane system

Giuseppe Dibitetto, Nicolò Petri

摘要:

在最小$d = 6$ $F(4)$规范超引力下导出了一类新的精确超对称解。这些流量的特点是一个非平凡的径向轮廓的2-形式的规范位纳入超重力多重态。特别是在这一类的三个解决方案的特点是由一个$\mathrm{AdS}_3$叶理的6D背景和一个$\mathrm{AdS}_6$渐近几何。其次,考虑最简单的例子,我们给它的大规模IIA隆起描述一个扭曲的解决方案的类型$\mathrm{AdS}_3\times S^2\times S^3$纤维超过两个间隔$I_r \times I_ξ$。我们解释这个背景的D4 $-$ D8系统上的束缚态D2 $-$ NS 5 $-$ D 6结束产生表面缺陷的近地平线。最后,我们讨论了它的全息对偶解释的$\mathcal{N} = (0, 4)$ SCFT $_2$缺陷理论的$\mathcal{N} = 2$ SCFT $_5$对偶的$\mathrm{AdS}_6\times S^4$大量IIA翘曲真空。

英文摘要:

A new class of exact supersymmetric solutions is derived within minimal $d = 6$ $F(4)$ gauged supergravity. These flows are all characterized by a non-trivial radial profile for the 2-form gauge potential included into the supergravity multiplet. In particular three solutions within this class are featured by an $\mathrm{AdS}_3$ foliation of the 6d background and by an $\mathrm{AdS}_6$ asymptotic geometry. Secondly, considering the simplest example of these, we give its massive IIA uplift describing a warped solution of the type $\mathrm{AdS}_3\times S^2\times S^3$ fibered over two intervals $I_r \times I_ξ$ . We interpret this background as the near-horizon of a D4 $-$ D8 system on which a bound state D2 $-$ NS5 $-$ D6 ends producing a surface defect. Finally we discuss its holographic dual interpretation in terms of a $\mathcal{N} = (0, 4)$ SCFT$_2$ defect theory within the $\mathcal{N} = 2$ SCFT$_5$ dual to the $\mathrm{AdS}_6\times S^4$ massive IIA warped vacuum.

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