All, Being geographically separate from the corpus of folks on this list, the reason for this email may have already been discussed, debunked, railed at, lauded, etc. But since I don't think I've seen it on the mailing list I thought I'd take a swing at passing it on. If I've made a mis-step, my apoligies.
http://arxiv.org/abs/0809.0151 More Really is Different Authors: Mile Gu<http://arxiv.org/find/cond-mat/1/au:+Gu_M/0/1/0/all/0/1>, Christian Weedbrook<http://arxiv.org/find/cond-mat/1/au:+Weedbrook_C/0/1/0/all/0/1>, Alvaro Perales<http://arxiv.org/find/cond-mat/1/au:+Perales_A/0/1/0/all/0/1>, Michael A. Nielsen<http://arxiv.org/find/cond-mat/1/au:+Nielsen_M/0/1/0/all/0/1> In 1972, P.W.Anderson suggested that `More is Different', meaning that complex physical systems may exhibit behavior that cannot be understood only in terms of the laws governing their microscopic constituents. We strengthen this claim by proving that many macroscopic observable properties of a simple class of physical systems (the infinite periodic Ising lattice) cannot in general be derived from a microscopic description. This provides evidence that emergent behavior occurs in such systems, and indicates that even if a `theory of everything' governing all microscopic interactions were discovered, the understanding of macroscopic order is likely to require additional insights. And commentary from NewScientist: http://tiny.pl/srp2 -Ian -- ___________________________________ Ian P. Cook m: 412.759.8973 jabber: [EMAIL PROTECTED] Y!/MSN: ian_palmer_cook AIM: ianpalmercook ___________________________________
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