Abstract
We study the dynamics of charged, spherically symmetric dust shells in the presence of a positive cosmological constant. We find generalizations of the well-known solutions in asymptotically flat spacetime, in particular orbits into ``parallel universes,'' but also new solutions corresponding to a ``bounce'' of the shell before an event horizon has formed. We also discuss ``bubble'' solutions, in which a charged shell and an oppositely charged singularity are spontaneously created and annihilated.
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