Geometry from local flatness in Lorentzian spin foam theories

Abstract

Local flatness is a property shared by all the spin foam models. It ensures that the theory's fundamental building blocks are flat by requiring locally trivial parallel transport. In the context of simplicial Lorentzian spin foam theory, we show that local flatness is the main responsible for the emergence of geometry independently of the details of the spin foam model. We discuss the asymptotic analysis of the EPRL spin foam amplitudes in the large quantum number regime, highlighting the interplay with local flatness.

20 pages, 4 figures. Comments are welcome

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Cited by in corpus (3)

• Summing bulk quantum numbers with Monte Carlo in spin foam theories
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• Spinfoam tunneling of quantum geometries in angle variables