Inducing Barbero-Immirzi connections along SU(2) reductions of bundles on spacetime

L. Fatibene, M. Francaviglia, M. Ferraris
2011 Physical Review D  
We shall present here a general apt technique to induce connections along bundle reductions which is different from the standard restriction. This clarifies and generalizes the standard procedure to define Barbero-Immirzi (BI) connection, though on spacetime. The standard spacial BI connection used in LQG is then obtained by its spacetime version by standard restriction. The general prescription to define such a reduced connection is interesting from a mathematical viewpoint and it allows a
more » ... ral and direct control on transformation laws of the induced object. Moreover, unlike what happens by using standard restriction, we shall show that once a bundle reduction is given, then any connection induces a reduced connection with no constraint on the original holonomy as it happens when connections are simply restricted.
doi:10.1103/physrevd.84.064035 fatcat:erzlqgi6cbciplfzkydhu2dliu