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.
机构:
Univ Calif Santa Cruz, Dept Phys, 1156 High St, Santa Cruz, CA 95064 USA
Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, 1156 High St, Santa Cruz, CA 95064 USAUniv Calif Santa Cruz, Dept Phys, 1156 High St, Santa Cruz, CA 95064 USA