Abstract
We show that the families of effective actions considered by Jacobson et al. to study Lorentz invariance violations contain a class of models that represent pure general relativity with a Euclidean signature. We also point out that some members of this family of actions preserve Lorentz invariance in a generalized sense.
- Received 24 July 2003
DOI:https://doi.org/10.1103/PhysRevD.68.087501
©2003 American Physical Society