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arXiv 1807.00591hep-thgr-qc
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弦论中的大质量反德西特引力

Massive Anti-de Sitter Gravity from String Theory

Constantin Bachas, Ioannis Lavdas

摘要:

我们研究了IIB型弦论中大质量反德西特(AdS)引力的自顶向下嵌入。超重力解有一个AdS $_4$纤维在流形M $_6$上弯曲,流形M $_6$的形状类似于苏格兰风笛:“袋”是一个传统的AdS $_4$ -紧致化流形,而“管”是高度弯曲的半无限Janus喉。除了简化以前的讨论的问题,我们的主要新的结果是一个公式的引力子质量只取决于有效的引力耦合的袋子,并在D3膜的收费和Janus喉咙的janson跳跃。我们比较这些嵌入的Karch-Randall模型和其他自下而上的建议,AdS引力,我们评论他们的全息解释。本文是[1]的姊妹篇,分析了一些具有纯AdS $_5\times$ S $^5$喉的密切相关的双度量模型.

英文摘要:

We study top-down embeddings of massive Anti-de Sitter (AdS) gravity in type-IIB string theory. The supergravity solutions have a AdS$_4$ fiber warped over a manifold M$_6$ whose shape resembles that of scottish bagpipes: The `bag' is a conventional AdS$_4$-compactification manifold, while the `pipes' are highly-curved semi-infinite Janus throats. Besides streamlining previous discussions of the problem, our main new result is a formula for the graviton mass which only depends on the effective gravitational coupling of the bag, and on the D3-brane charges and dilaton jumps of the Janus throats. We compare these embeddings to the Karch-Randall model and other bottom-up proposals for massive-AdS-gravity, and we comment on their holographic interpretation. This is a companion paper to [1], where some closely-related bimetric models with pure AdS$_5\times$S$^5$ throats were analyzed.

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