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arXiv 0911.5697hep-th
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SU(2)-结构流形上的IIA型定向折叠紧化

Type IIA orientifold compactification on SU(2)-structure manifolds

Thomas Danckaert, Jan Louis

摘要:

本文研究了具有SU(2)结构的六维东方褶皱背景下IIA型弦论的有效理论。我们专注于与O 6平面的orientifolds的情况下,我们计算玻色子有效作用在超引力近似。对于一般的SU(2)结构背景,我们发现低能有效理论是一个规范N=2的超引力,其中矢量和超多重态的模都是带电的。由于所有这些超引力都是从一个N=4的背景中下降的,它们的标量目标空间总是SU(1,1)/U(1)x SO(6,n)/SO(6)xSO(n)陪集的商,因此也是非常有限的。

英文摘要:

We investigate the effective theory of type IIA string theory on six-dimensional orientifold backgrounds with SU(2)-structure. We focus on the case of orientifolds with O6-planes, for which we compute the bosonic effective action in the supergravity approximation. For a generic SU(2)-structure background, we find that the low-energy effective theory is a gauged N=2 supergravity where moduli in both vector and hypermultiplets are charged. Since all these supergravities descend from a corresponding N=4 background, their scalar target space is always a quotient of a SU(1,1)/U(1) x SO(6,n)/SO(6)xSO(n) coset, and is therefore also very constrained.

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