Of possible general interest -

J. Ambjrn J. Jurkiewicz and R. Loll
(also a writeup in Nature news, at http://www.nature.com/news/2004/041004/full/041004-17.html)


"Emergence of a 4D World from Causal Quantum Gravity"
http://dx.doi.org/10.1103%2FPhysRevLett.93.131301




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