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25 September 2022
  » arxiv » 0811.3147

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Plebanski gravity without the simplicity constraints
Kirill Krasnov ;
Date 19 Nov 2008
AbstractIn 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.
Source arXiv, 0811.3147
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