2013/06/30 by Gonzalo J. Olmo, D. Rubiera-Garcia · 1 citation
Physics and Astronomy · #hep-th #gr-qc #hep-ph
paper · pdf · doi:10.1088/1475-7516/2014/02/010
published as JCAP 02, 010 (2014) · 25 single-column pages, 2 figures, final version to appear in JCAP
arxiv created 2014/01/31 · arxiv updated 2014/03/04
We point out that in certain four-dimensional extensions of general relativity constructed within the Palatini formalism stable self-gravitating objects with a discrete mass and charge spectrum may exist. The incorporation of nonlinearities in the electromagnetic field may effectively reduce their mass spectrum by many orders of magnitude. As a consequence, these objects could be within (or near) the reach of current particle accelerators. We provide an exactly solvable model to support this idea.