Abstract
Generalizations of gravitational Born-Infeld type Lagrangians are investigated. Phenomenological constraints (reduction to Einstein-Hilbert action for small curvature, spin-two ghost freedom, and absence of Coulomb-like Schwarschild singularity) select one effective Lagrangian whose dynamics is dictated by the tensors and (not or the scalar ).
- Received 7 June 2005
DOI:https://doi.org/10.1103/PhysRevD.72.064018
©2005 American Physical Society