On a Covariant Formulation of the Barbero-Immirzi Connection
arXiv:gr-qc/0702134 · doi:10.1088/0264-9381/24/11/017
Abstract
The Barbero-Immirzi (BI) connection, as usually introduced out of a spin connection, is a global object though it does not transform properly as a genuine connection with respect to generic spin transformations, unless quite specific and suitable gauges are imposed. We shall here investigate whether and under which global conditions a (properly transforming and hence global) SU(2)-connection can be canonically defined in a gauge covariant way. Such SU(2)-connection locally agrees with the usual BI connection and it can be defined on pretty general bundles; in particular triviality is not assumed. As a by-product we shall also introduce a global covariant SU(2)-connection over the whole spacetime (while for technical reasons the BI connection in the standard formulation is just introduced on a space slice) which restricts to the usual BI connection on a space slice.
arXiv comment13 pages
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Cited by in corpus (10)
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- General theory of Lie derivatives for Lorentz tensors
- Entropy of Self-Gravitating Systems from Holst's Lagrangian
- Inducing Barbero-Immirzi Connections along SU(2)-reductions of Bundles on Spacetime
- Canonical gravity in two time and two space dimensions
- Introduction to Loop Quantum Gravity. The Holst's action and the covariant formalism