Thursday, July 27, 2006

A way to escape the end of the universe?

[hep-th/0607137] Some notes on the Big Trip

There's some unusual stuff to be found at arXiv.

Can't say that I had heard of the "Big Trip" before. From the paper itself:

Rather bizarre implications from dark energy models are now being considered that might ultimately make the
future of the universe sings a somehow weird melody. It has been in fact recently proposed [1] that if the current value of the equation-of-state parameter w would keep up being less than -1 in the future, then the throat radius of naturally existing wormholes could grow large enough to engulf the entire universe itself, before this reached the so called big rip singularity [2], at least for an asymptotic observer. This rather astonishing result - which has been dubbed the ”big trip” - has proved to be not free from a number of difficulties...

It will be seen that none of the problems (1), (3) and (4) indeed hold for the asymptotic observer, and that problem (2) is a debatable one and might require considering the big trip to take place within the context of a multiverse scenario.

The whole universe disappearing down a worm hole. That would be something to see.

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