Determinantal Born-Infeld Coupling of Gravity and Electromagnetism
arXiv:2112.09978 · doi:10.1103/PhysRevD.105.084067
Abstract
We study a Born-Infeld inspired model of gravity and electromagnetism in which both types of fields are treated on an equal footing via a determinantal approach in a metric-affine formulation. Though this formulation is a priori in conflict with the postulates of metric theories of gravity, we find that the resulting equations can also be obtained from an action combining the Einstein-Hilbert action with a minimally coupled nonlinear electrodynamics. As an example, the dynamics is solved for the charged static black hole.
12 pages, 1 figure