From: Spudboy100@aol.com
Date: Sun Jun 08 2003 - 02:29:20 MDT
http://physicsweb.org/article/world/16/6/7
Does time's arrow point in the wrong direction?
Physics in Action: June 2003
Perhaps the deepest mystery in all of physics is quantum non-locality - the
ability of two distant systems to instantaneously know about each other.
Non-locality means that two particles in a quantum system can be "entangled" such
that the state of one particle affects the state of the other, regardless of how
far apart they are. As well as challenging our common sense, non-locality
suggests that the ultimate speed limit - the speed of light - is violated.
Einstein spent many years worrying about this problem because such "superluminal"
interactions seem to be incompatible with special relativity.
Now Sheldon Goldstein at Rutgers University in the US and Roderich Tumulka at
the University of Munich in Germany think they might have found a way to
reconcile quantum non-locality and relativity. But their idea is far from
conventional.
In the Jine Issue of Physics World, Antony Valentin, at the Perimeter
Institute for Theoretical Physics in Waterloo, Canada describes this breakthrough.
The method requires two opposite arrows of time to be at work in the same
region of the universe, unlike the single "forward" direction that we are aware of.
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