Proposes a causal EPRL spin-foam model where the two-complex orientation encodes causality and aids semiclassical geometry reconstruction.
Engle’s proper ver- tex is motivated by the restriction to the Einstein- Hilbert sectors while we are motivated by our anal- ysis of the causal structure
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Causal structure in spin-foams
Proposes a causal EPRL spin-foam model where the two-complex orientation encodes causality and aids semiclassical geometry reconstruction.