David Rideout

Senior Researcher, University of California San Diego

Causal sets are discrete partially ordered sets, which are postulated to be a discrete substratum to continuum spacetime. The order gives rise to macroscopic causal order, while the discreteness or ‘counting’ gives rise to macroscopic spacetime volume. Given that causal structure is sufficient to reproduce the conformal metric, and discreteness provides the remaining volume information, it is reasonable to expect that causal sets alone possess sufficient structure to reproduce the entire continuum spacetime geometry.