Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002nmgm.meet.1317r&link_type=abstract
"THE NINTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation and R
Physics
Scientific paper
Spin foam models for quantum gravity can be obtained from Feynman
expansion of certain auxiliary field theories defined over a group
manifold. Spacetime histories emerges nonperturbatively as the Feynman
graphs of the field theory.
Reisenberger Michael
Rovelli Carlo
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