Quince - 24-4-2006 at 15:02
http://www.sciam.com/article.cfm?chanID=sa006&colID=1&am...
Subscription only; to access the full text, download the whole issue at http://thepiratebay.org/details.php?id=3460423
Unfortunately the article is for subscribers only (don't ask me for it, I read it in a print copy at the doctor's office).
There is more info at http://en.wikipedia.org/wiki/Topological_quantum_computer
From the Wikipedia article, I guess I don't understand how anyons have their world lines crossed when only EM stuff is used; I thought only gravity
can do that. Can someone explain this? The explanation there is about non-existent.
[Edited on 24-4-2006 by Quince]
12AX7 - 24-4-2006 at 16:37
I'm not sure what's meant by "crossed"; if two lines are parallel, they never cross in any transformation, but if one is at an angle, they may never
physically intersect, but in some perspectives, they will appear to cross. Ok, that's probably a bad example, because math doesn't fall back to a
reduced number of dimensions unless it was told to do so... So it would have to mean that they cross paths, if not necessarily at the same time
(which would be a classical case of two objects occupying the same space). Time is just another variable, so funky things can happen in quantum
mechanics.
Fermions of course obey the Pauli exclusion principle as mentioned, which I suppose would be convienient to keeping things in place.
Tim
Quince - 25-4-2006 at 01:21
I'm sure they did not mean straight lines. Worldlines is just a term, doesn't mean it's straight.