Abstract
It has already been known for two decades that general relativity can be reformulated as a certain gauge theory, so that the only dynamical field is an SO(3) connection and the spacetime metric appears as a derived object. However, no simple action principle realizing these ideas has been available. A new elegant action principle for such a “pure connection” formulation of GR is described.
- Received 23 March 2011
DOI:https://doi.org/10.1103/PhysRevLett.106.251103
© 2011 American Physical Society