arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0807.4527hep-th
收藏

T-对偶、广义几何与非几何背景

T-duality, Generalized Geometry and Non-Geometric Backgrounds

Mariana Graña, Ruben Minasian, Michela Petrini, Daniel Waldram

摘要:

我们讨论的行动O(d,d),特别是T-对偶,在广义几何的背景下,专注于所谓的非几何背景的描述。我们导出了描述SU(3)结构背景下广义几何对偶的纯旋量的局部表达式,并证明了N=1真空的方程在T-对偶下是不变的。我们还提出了一个局部广义几何定义的收费f,H,Q和R出现在有效的四维理论,使用柯朗括号。然后,我们解决某些全球性的方面,特别是当地的非几何电荷是否可以计量,例如,背景承认一个环面行动,以及结构的广义parallelizable背景。

英文摘要:

We discuss the action of O(d,d), and in particular T-duality, in the context of generalized geometry, focusing on the description of so-called non-geometric backgrounds. We derive local expressions for the pure spinors descibing the generalized geometry dual to an SU(3) structure background, and show that the equations for N=1 vacua are invariant under T-duality. We also propose a local generalized geometrical definition of the charges f, H, Q and R appearing in effective four-dimensional theories, using the Courant bracket. We then address certain global aspects, in particular whether the local non-geometric charges can be gauged away in, for instance, backgrounds admitting a torus action, as well as the structure of generalized parallelizable backgrounds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑