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Singular Structure in 4D Simplicial Gravity

S. Catterall, R. Renken, J. Kogut

hep-latarXiv:hep-lat/9709007

Abstract

We show that the phase transition previously observed in dynamical triangulation models of quantum gravity can be understood as being due to the creation of a singular link. The transition between singular and non-singular geometries as the gravitational coupling is varied appears to be first order.

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