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arXiv 1705.04477hep-thgr-qcmath.DG
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六维中2-和3-形式的拓扑场论

Topological field theories of 2- and 3-forms in six dimensions

Yannick Herfray, Kirill Krasnov

摘要:

我们考虑了六维空间中2-和3-形式的几种同形不变量场论。它们都具有相同的动力学项$BdC$,但添加的势项不同。没有势项的理论$BdC$是拓扑的--它描述了没有传播自由度。我们表明,该理论继续保持拓扑时,无论是$BBB$或$C\hat{C}$潜在的长期被添加。后一个理论可以被看作是6维希钦理论的背景独立版本,因为它的临界点是复的或仿复的6维流形,但与希钦的构造不同,人们不需要选择背景上同调类来定义理论。我们还表明,降维的$C\hat{C}$理论的三维,减少时,在S3,给出三维重力。

英文摘要:

We consider several diffeomorphism invariant field theories of 2- and 3-forms in six dimensions. They all share the same kinetic term $BdC$, but differ in the potential term that is added. The theory $BdC$ with no potential term is topological - it describes no propagating degrees of freedom. We show that the theory continues to remain topological when either the $BBB$ or $C\hat{C}$ potential term is added. The latter theory can be viewed as a background independent version of the 6-dimensional Hitchin theory, for its critical points are complex or para-complex 6-manifolds, but unlike in Hitchin's construction, one does not need to choose of a background cohomology class to define the theory. We also show that the dimensional reduction of the $C\hat{C}$ theory to three dimensions, when reducing on S3, gives 3D gravity.

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