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arXiv 0811.3147gr-qc
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无简单性约束的普列班斯基引力

Plebanski gravity without the simplicity constraints

Kirill Krasnov

摘要:

在普列班斯基的自对偶表述中,广义相对论变成了SO(3)BF理论,并补充了B场的所谓简单性(或度量性)约束。该理论的主要动力学方程指出,B相容SO(3)联络的曲率是自对偶的,自对偶的概念由B场定义。我们描述了一个理论,通过下降的度量约束,只保留的要求,B-兼容连接的曲率是自对偶。事实证明,人们得到的理论在很大程度上是由比安奇恒等式确定的。此外,它仍然是一个引力理论,只有两个传播自由度,如GR。

英文摘要:

In Plebanski's self-dual formulation general relativity becomes SO(3) BF theory supplemented with the so-called simplicity (or metricity) constraints for the B-field. The main dynamical equation of the theory states that the curvature of the B-compatible SO(3) connection is self-dual, with the notion of self-duality being defined by the B-field. We describe a theory obtained by dropping the metricity constraints, keeping only the requirement that the curvature of the B-compatible connection is self-dual. It turns out that the theory one obtains is to a very large degree fixed by the Bianchi identities. Moreover, it is still a gravity theory, with just two propagating degrees of freedom as in GR.

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。

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