PT Journal
AU Lobo, FSN
   Martinez-Asencio, J
   Olmo, GJ
   Rubiera-Garcia, D
TI Planck scale physics and topology change through an exactly solvable model
SO Physics Letters B
JI Phys. Lett. B
PY 2014
BP 163
EP 167
VL 731
DI 10.1016/j.physletb.2014.02.038
LA English
DE Modified gravity; Palatini formalism; Planck scale physics; Dynamical Vaidya solutions; Topology change
AB We consider the collapse of a charged radiation fluid in a Planck-suppressed quadratic extension of General Relativity (GR) formulated A la Palatini. We obtain exact analytical solutions that extend the charged Vaidya-type solution of GR, which allows to explore in detail new physics at the Planck scale. Starting from Minkowski space, we find that the collapsing fluid generates wormholes supported by the electric field. We discuss the relevance of our findings in relation to the quantum foam structure of space-time and the meaning of curvature divergences in this theory.
ER