Title:	Path integral suppression of badly behaved causal sets
Authors:	Carlip, P Carlip, S Surya, S
Issue Date:	31-Mar-2023
Publisher:	IOP Publishing Ltd.
Citation:	Classical and Quantum Gravity, 2023, Vol. 40, p095004
Abstract:	Causal set theory is a discrete model of spacetime that retains a notion of causal structure. We understand how to construct causal sets that approximate a given spacetime, but most causal sets are not at all manifold-like, and must be dynamically excluded if something like our Universe is to emerge from the theory. Here we show that the most common of these 'bad' causal sets, the Kleitman-Rothschild orders, are strongly suppressed in the gravitational path integral, and we provide evidence that a large class of other 'bad' causal sets are similarly suppressed. It thus becomes plausible that continuum behavior could emerge naturally from causal set quantum theory.
Description:	Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/8081
ISSN:	0264-9381 1361-6382 (Online)
Alternative Location:	https://arxiv.org/abs/2209.00327 http://dx.doi.org/10.1088/1361-6382/acc50c https://inspirehep.net/literature/2145364 https://ui.adsabs.harvard.edu/abs/2023CQGra..40i5004C/abstract
Copyright:	2023 IOP Publishing Ltd.
Appears in Collections:	Research Papers (TP)

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