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arXiv 2301.05239hep-thmath.AG
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广义环面多边形、T膜与5d SCFTs

Generalized Toric Polygons, T-branes, and 5d SCFTs

Antoine Bourget, Andrés Collinucci, Sakura Schafer-Nameki

AI总结:

本文扩展了5-膜网与环面卡拉比-丘三重的联系,利用广义环面多边形(GTP)和IIA框架中的T膜,为包含7-膜的膜构型提供了几何实现,并证明了Hanany-Witten移动对应于D6膜上的半单真空期望值,进而引发几何复结构形变。

摘要:

5d 超共形场论(SCFTs)本质上是强耦合的紫外不动点,其实现依赖于弦论方法:它们可以通过在局部卡拉比-丘三重奇点上紧化 M 理论来构造,或者从 IIB 型弦论中 5-膜网的世界体积中得到。5-膜网与环面卡拉比-丘三重之间存在对应关系,然而当允许多个 5-膜终止于单个 7-膜时,这种对应关系就会失效。在本文中,我们扩展了这一联系,并提供了包括 7-膜在内的膜构型的几何实现。带有 7-膜的网定义了所谓的广义环面多边形(GTP),它对应于通过移除环面多边形外部边缘上的顶点而获得的组合数据。我们将与 GTP 相关的几何形状识别为环面卡拉比-丘三重的非环面形变,并在沿单条边缘引入 7-膜时,提供了该几何形状精确的代数描述。我们分析中的关键要素是 IIA 框架中的 T 膜,其中包含 D6 膜。我们证明,在 IIB 侧对 7-膜执行 Hanany-Witten 移动对应于在 D6 膜的世界体积上开启半单真空期望值,这进而提升为卡拉比-丘几何的复结构形变。我们通过计算形变几何的 crepant resolution 来测试该提议,从而检查其与 SCFTs 预期性质的一致性。

英文摘要:

5d Superconformal Field Theories (SCFTs) are intrinsically strongly-coupled UV fixed points, whose realization hinges on string theoretic methods: they can be constructed by compactifying M-theory on local Calabi-Yau threefold singularities or alternatively from the world-volume of 5-brane-webs in type IIB string theory. There is a correspondence between 5-brane-webs and toric Calabi-Yau threefolds, however this breaks down when multiple 5-branes are allowed to end on a single 7-brane. In this paper, we extend this connection and provide a geometric realization of brane configurations including 7-branes. A web with 7-branes defines a so-called generalized toric polygon (GTP), which corresponds to combinatorial data that is obtained by removing vertices along external edges of a toric polygon. We identify the geometries associated to GTPs as non-toric deformations of toric Calabi-Yau threefolds and provide a precise, algebraic description of the geometry, when 7-branes are introduced along a single edge. The key ingredients in our analysis are T-branes in a type IIA frame, which includes D6-branes. We show that performing Hanany-Witten moves for the 7-branes on the type IIB side corresponds to switching on semisimple vacuum expectation values on the worldvolume of D6-branes, which in turn uplifts to complex structure deformations of the Calabi-Yau geometries. We test the proposal by computing the crepant resolutions of the deformed geometries, thereby checking consistency with the expected properties of the SCFTs.

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