[FPSPACE] Time to flip?
dstdba at post4.tele.dk
Wed May 27 15:17:56 EDT 2009
>From <http://arxivblog.com/?p=71> http://arxivblog.com/?p=71 an interesting
hypothesis about our Universe bouncing
the dimension of time back and forth between Lorentzian and Euclidean:
It don't get much weirder than this. The universe is about to lose its
dimension of time [...]
[...] the universe we see around us is a 4-dimensional cosmos called a
in a multidimensional universe. The "signature" of our universe is the
number of space and
time-like dimensions it has: in our case we got 3 space-like dimensions and
dimension. It's what astrobods call a Lorentzian universe.
But our universe may not always have been like this. Some theorists think it
may once have
had a Euclidean signature meaning that all the dimensions were space-like.
Mars and a few pals in Spain say that the Universe's signature might be
about to flip from
Lorentzian to Euclidean. In other words, our dimension of time is about to
Mars has calculated what it's like to be an observer in a universe that is
about to flip and
get this: it would look as if it were expanding and accelerating away from
us. Sound familiar?
Ref: <http://arxiv.org/abs/0710.0820> arxiv.org/abs/0710.0820: Is the
Accelerated Expansion Evidence of a Forthcoming change
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