出典:Wiktionary
出典:『Wiktionary』 (2009/11/20 21:47 UTC 版)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/05 22:09 UTC 版)
In condensed matter physics, a string-net is an extended object whose collective behavior has been proposed as a physical explanation for topological order by Michael A. Levin and Xiao-Gang Wen. A particular string-net model may involve only closed loops; or networks of oriented, labeled strings obeying branching rules given by some gauge group; or still more general networks.