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arXiv 0804.0595hep-th
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在SU(3)× SU(3)结构上约化民主型II超引力

Reducing democratic type II supergravity on SU(3) x SU(3) structures

Davide Cassani

摘要:

考虑了在SU(3)× SU(3)结构和一般通量背景下的II型超引力。使用广义几何形式主义,我们研究的降维导致N=2规范超引力在四维,可能与张量多重态。特别地,给出了全N=2标量势的几何公式.然后我们实现了一个截断算子,并导出了完全的N=2玻色作用量。虽然NSNS贡献是通过直接降维获得的,但RR扇区的贡献是从民主公式开始计算的,并要求与简化的运动方程保持一致。

英文摘要:

Type II supergravity on backgrounds admitting SU(3) x SU(3) structure and general fluxes is considered. Using the generalized geometry formalism, we study dimensional reductions leading to N=2 gauged supergravity in four dimensions, possibly with tensor multiplets. In particular, a geometric formula for the full N=2 scalar potential is given. Then we implement a truncation ansatz, and derive the complete N=2 bosonic action. While the NSNS contribution is obtained via a direct dimensional reduction, the contribution of the RR sector is computed starting from the democratic formulation and demanding consistency with the reduced equations of motion.

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