Riemann–Cartan Gravity with Dynamical Signature

Model of Riemann–Cartan gravity with varying signature metric is considered. The basic dynamical variables the formalism are vierbein, spin connection, and an internal in tangent space. corresponding action contains new terms, which depend on these fields. In general case determined dynamically. Minkowski preferred dynamically because configurations other signatures suppressed. We also discuss briefly motion particles background modified black hole configuration, inside horizon that Euclidean space–time.