A vielbein formulation of unified Einstein-Maxwell theory
arXiv:1609.07442 · doi:10.1088/0264-9381/23/23/011
Abstract
In the framework of J-bundles a vielbein formulation of unified Einstein-Maxwell theory is proposed. In the resulting scheme, field equations matching the gravitational and electromagnetic fields are derived by constraining a five-dimensional variational principle. No dynamical scalar field is involved.