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arXiv 1011.0165hep-th
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关于几何非对易广义相对论的几个模型

On some models of geometric noncommutative general relativity

Michal Dobrski

摘要:

利用Fedosov自同态丛的形变量子化理论,我们构造了几种对应于任意辛非对易张量的纯几何形变真空引力模型.研究了Einstein-Hilbert和Palatini作用量的形变。坐标协变场方程推导出的变形参数的二阶。对于某些模型,他们解决和明确的修正,任意的Ricci平坦度量指出。研究了它与Seiberg-Witten映射理论的关系,并解释了它与函数的Fedosov *-积描述的时空非对易性的对应关系。

英文摘要:

Using Fedosov theory of deformation quantization of endomorphism bundle we construct several models of pure geometric, deformed vacuum gravity, corresponding to arbitrary symplectic noncommutativity tensor. Deformations of Einstein-Hilbert and Palatini actions are investigated. Coordinate covariant field equations are derived up to the second order of the deformation parameter. For some models they are solved and explicit corrections to an arbitrary Ricci-flat metric are pointed out. The relation to the theory of Seiberg-Witten map is also studied and the correspondence to the spacetime noncommutativity described by Fedosov *-product of functions is explained.

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