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arXiv 1109.3191hep-th
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基于M/F理论的Calabi-Yau四重态的引力瞬子和通量

Gravitational Instantons and Fluxes from M/F-theory on Calabi-Yau fourfolds

Thomas W. Grimm, Raffaele Savelli

摘要:

我们紧化四维N=1规范超引力理论在一个圆上,包括通量的移位对称标量。四维Taub-NUT引力瞬子在没有通量的情况下普遍修正了三维超势。在通量的存在下,这些Taub-NUT瞬子的贡献不再是规范不变的。不变性可以通过规范瞬子在陶布-努特瞬子之上恢复。我们建立了嵌入到M理论的这种情况。圆通量和规范产生于一类有限的M-理论四形式通量的分解卡-丘四重。椭圆四重基上的M5-膜对偶为普适的陶布-NUT瞬子。在通量的存在下,这个M5-膜是反常的。我们认为,异常自由的贡献产生于所涉及的M5膜几何对偶规范瞬子顶部的陶布NUT瞬子。在引力瞬子修正中加入一个四维超势,在稳定的紧化半径下得到三维反德西特真空。我们评论的可能性,以提升这些M-理论真空,并隧道四维F-理论真空。

英文摘要:

We compactify four-dimensional N=1 gauged supergravity theories on a circle including fluxes for shift-symmetric scalars. Four-dimensional Taub-NUT gravitational instantons universally correct the three-dimensional superpotential in the absence of fluxes. In the presence of fluxes these Taub-NUT instanton contributions are no longer gauge-invariant. Invariance can be restored by gauge instantons on top of Taub-NUT instantons. We establish the embedding of this scenario into M-theory. Circle fluxes and gaugings arise from a restricted class of M-theory four-form fluxes on a resolved Calabi-Yau fourfold. The M5-brane on the base of the elliptic fourfold dualizes into the universal Taub-NUT instanton. In the presence of fluxes this M5-brane is anomalous. We argue that anomaly free contributions arise from involved M5-brane geometries dual to gauge-instantons on top of Taub-NUT instantons. Adding a four-dimensional superpotential to the gravitational instanton corrections leads to three-dimensional Anti-de Sitter vacua at stabilized compactification radius. We comment on the possibility to uplift these M-theory vacua, and to tunnel to four-dimensional F-theory vacua.

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