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2017

Suppression of non-manifold-like sets in the causal set path integral

Loomis, S. P., Carlip, S.

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While it is possible to build causal sets that approximate spacetime manifolds, most causal sets are not at all manifold-like.

We show that a Lorentzian path integral with the Einstein-Hilbert action has a phase in which one large class of non-manifold-like causal sets is strongly suppressed, and suggest a direction for generalization to other classes.
While we cannot yet show our argument holds for all non-manifold-like sets, our results make it plausible that the path integral might lead to emergent manifold-like behavior with no need for further conditions.

Suppression of non-manifold-like sets in the causal set path integral · Around

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