Causal sets and an emerging continuum

Carlip, S.

doi:10.1007/s10714-024-03281-1

Title: Causal sets and an emerging continuum

Journal Article · 14 August 2024 · General Relativity and Gravitation

DOI: https://doi.org/10.1007/s10714-024-03281-1 · OSTI ID:2439811

Abstract Causal set theory offers a simple and elegant picture of discrete physics. But the vast majority of causal sets look nothing at all like continuum spacetimes, and must be excluded in some way to obtain a realistic theory. I describe recent results showing that almost all non-manifoldlike causal sets are, in fact, very strongly suppressed in the gravitational path integral. This does not quite demonstrate the emergence of a continuum—we do not yet understand the remaining unsuppressed causal sets well enough—but it is a significant step in that direction.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-91ER40674

OSTI ID:: 2439811

Journal Information:: General Relativity and Gravitation, Journal Name: General Relativity and Gravitation Journal Issue: 8 Vol. 56; ISSN 0001-7701

Publisher:: Springer Science + Business MediaCopyright Statement

Country of Publication:: United States

Language:: English

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