Re: inonu-wigner contraction

From: Oz (oz_at_farmeroz.port995.com)
Date: 09/28/04 

Date: Tue, 28 Sep 2004 15:19:56 +0000 (UTC)

James Dolan <jdolan@math-rs-n03.math.ucr.edu> writes
>very roughly, it's the kind of "conceptual unflattening" of a geometry
>that you perform in your mind when you make a conceptual leap and
>realize that the geometry that you thought was "flat" is actually
>"round" (in a certain very loose sense), but with such a big "radius
>of curvature" that it naively seems flat.

Penrose wrote a 'popular' piece on twistors in New Scientist the other
week. Unfortunately it was a tad too popular in that it pretty well said
just three things:

1) Twistor space is associated with the concept that light beams are
zero length and zero time.

2) One needed to add a couple of other (unstated) criteria.

3) The resultant space included calabi-yau and 4D GR spacetime and was a
3-complex-D spacetime.

The implication being that this was a space where QM & GR could co-
exist.

Unfortunately there wasn't enough meat for me to see exactly what he was
meaning. I will admit to having tried (frequently) to see light as
instantly connecting two points, but never to be a physical description
of two points being 'connected'. 

-- 
Oz
This post is worth absolutely nothing and is probably fallacious.
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