Dynamical generation of wormholes with charged fluids in quadratic Palatini gravity

摘要: The dynamical generation of wormholes within an extension General Relativity (GR) containing (Planck's scale-suppressed) Ricci-squared terms is considered. theory formulated assuming the metric and connection to be independent (Palatini formalism) probed using a charged null fluid as matter source. This has following effect: starting from Minkowski space, when flux active becomes Vaidya-type one, once switched off settles down into static configuration such that far Planck scale geometry virtually indistinguishable standard Reissner-Nordstr\"om solution GR. However, innermost region undergoes significant changes, GR singularity generically replaced by wormhole structure. Such structure completely regular for certain charge-to-mass ratio. Moreover, nontrivial topology allows us define charge in lines force trapped density flowing across throat universal constant. In light our results, we comment on physical significance curvature divergences this change issue, which support view space-time could have foamlike microstructure pervaded generated quantum gravitational effects.