Re: Deriving Dimensions
From: FrediFizzx (fredifizzx_at_hotmail.com)
Date: 09/29/04
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Date: Wed, 29 Sep 2004 13:53:29 -0700
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:q8q6d.129327$MQ5.34981@attbi_s52...
| Ref: http://focus.aps.org/story/v14/st13
|
| Phys. Rev. Lett. 93, 131301
| (issue of 24 September 2004)
|
| Deriving Dimensions
|
|
| It seems like the most obvious physical fact: The universe
| has four dimensions--three spanning space and one ticking
| away time. But the ultimate theory of gravity should explain
| why the universe is four-dimensional and how those dimensions
| arose, say researchers trying to unify the theories of
| quantum mechanics and relativity. Now, calculations in the 24
| September PRL show that when all possible microscopic
| contortions of spacetime are added together, a large-scale
| four-dimensional universe can emerge.
|
| For nearly 80 years physicists have struggled to reconcile
| the prevailing theory of gravity with quantum mechanics.
| According to Einstein's general theory of relativity, mass
| and energy warp spacetime. The undulations then affect the
| trajectories of passing objects, producing the effects we
| call gravity. In Einstein's theory, spacetime is a stretchy,
| dynamical entity.
|
| However, the precise state of any dynamical thing remains
| uncertain, according to quantum mechanics. So at lengths of
| about 10-35 meters, spacetime can no longer be smooth, but
| must be roiling and frothy. That "quantum foam" bedevils
| researchers trying to concoct a quantum theory of gravity
| because in it concepts such as "ahead" and "behind" or
| "sooner" and "later" can loose their meaning. And no one has
| explained how the four-dimensional spacetime we take for
| granted emerges from the fantastical foam. Researchers have
| attempted to generate familiar four-dimensional spacetime by
| adding up all the possible configurations of the foam, thus
| borrowing a page from quantum mechanics, in which theorists
| assume that a particle travels between two points by taking
| every conceivable path at once. But these calculations have
| produced spacetimes that have either just two dimensions, or
| infinitely many.
|
| See: http://focus.aps.org/story/v14/st13
Yeah baby! This looks like possible help for confirmation of vacuum charge
and dual space. 4D produces 3D + 1.
FrediFizzx
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