The future of a \(\Lambda\)-universe. (English) Zbl 1080.83559
Summary: It is argued that the accretion of phantom energy onto a wormhole in a universe with a positive cosmological constant leads also to a gradual increase of the wormhole throat radius, which eventually overtakes the super-accelerated expansion of the universe and becomes infinite at a time in the future before the big rip. Thus, the universe as a whole can time travel toward the past or the future.
MSC:
| 83F05 | Relativistic cosmology |
References:
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