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arXiv 0805.2297hep-th
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超流形上的偶几何和奇几何

Even and odd geometries on supermanifolds

M. Asorey, P. M. Lavrov

摘要:

我们从一般的角度分析所有可能的超对称广义辛和度量结构光滑流形。根据相应的二次张量的奇偶性,有两种不同类型的结构。一般来说,我们可以有偶/奇辛超流形,费多索夫超流形和黎曼超流形。偶数费多索夫超流形的几何是强约束的,必须是平坦的。在奇数情况下,标量曲率仅受Bianchi恒等式约束。然而,我们证明了奇黎曼超流形只能有常数量曲率。我们还指出,AdS空间的超对称推广在奇情况下是不存在的。

英文摘要:

We analyze from a general perspective all possible supersymmetric generalizations of symplectic and metric structures on smooth manifolds. There are two different types of structures according to the even/odd character of the corresponding quadratic tensors. In general we can have even/odd symplectic supermanifolds, Fedosov supermanifolds and Riemannian supermanifolds. The geometry of even Fedosov supermanifolds is strongly constrained and has to be flat. In the odd case, the scalar curvature is only constrained by Bianchi identities. However, we show that odd Riemannian supermanifolds can only have constant scalar curvature. We also point out that the supersymmetric generalizations of AdS space do not exist in the odd case.

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