Gauge and spacetime connections in the Plebanski formulation of complex general relativity

Details Gauge and spacetime connections in the Plebanski formulation of complex general relativity Gauge and spacetime connections in the Plebanski formulation of complex general relativity

2012-04-18

arxiv.org/abs/1204.4225v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

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The Plebanski formulation of complex general relativity is given in terms of variables valued in the complexification of the $so(3)$ Lie algebra. Therefore, it is genuinely a gauge theory that is also diffeomorphism-invariant. For this reason, the way that the Levi-Civita connection emerges from this formulation is not direct because both the internal (gauge) and the spacetime connections are geometrical structures a priori not related, there is not a natural link between them. Any possible relationship must be put in by hand or must come from extra hypotheses. In this paper, we analyze the correct relationship between these connections and show how they are related.

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