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arXiv 0811.2190hep-th
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非几何通量真空、S-对偶与代数几何

Non-geometric flux vacua, S-duality and algebraic geometry

Adolfo Guarino, George James Weatherill

摘要:

四维规范超引力下降从非几何弦紧化涉及一个广泛的类的通量对象,需要使理论不变的对偶变换下的有效水平。此外,复杂的代数条件,涉及这些通量产生比安基身份和蝌蚪取消有效理论。在这项工作中,我们研究了一个简单的T和S-对偶不变的规范超引力,一个IIB型弦紧化的$T^6/(Z_2 x Z_2)$ orientifold与O 3/O 7-平面。我们建立在最近的作品的结果,并开发了一个系统的方法来解决所有的通量约束的基础上的代数结构的通量。从T-对偶不变超引力开始,我们发现恢复S-对偶所需的通量可以简单地实现为规范子代数通过其第二上同调类的元素的线性变形。代数几何技术被广泛用于解决这些限制和超对称真空,集中我们的注意力在闵可夫斯基解决方案,成为系统可计算的,也提供澄清的方法。

英文摘要:

The four dimensional gauged supergravities descending from non-geometric string compactifications involve a wide class of flux objects which are needed to make the theory invariant under duality transformations at the effective level. Additionally, complex algebraic conditions involving these fluxes arise from Bianchi identities and tadpole cancellations in the effective theory. In this work we study a simple T and S-duality invariant gauged supergravity, that of a type IIB string compactified on a $T^6/(Z_2 x Z_2)$ orientifold with O3/O7-planes. We build upon the results of recent works and develop a systematic method for solving all the flux constraints based on the algebra structure underlying the fluxes. Starting with the T-duality invariant supergravity, we find that the fluxes needed to restore S-duality can be simply implemented as linear deformations of the gauge subalgebra by an element of its second cohomology class. Algebraic geometry techniques are extensively used to solve these constraints and supersymmetric vacua, centering our attention on Minkowski solutions, become systematically computable and are also provided to clarify the methods.

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