A 2D model of Causal Set Quantum Gravity: The emergence of the continuum

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dc.creatorBrightwell, Graham
dc.creatorHenson, Joe
dc.creatorSurya, Sumati
dc.date2007-06-04
dc.date2008-09-17
dc.date.accessioned2026-07-07T11:41:15Z
dc.date.available2026-07-07T11:41:15Z
dc.descriptionNon-perturbative theories of quantum gravity inevitably include configurations that fail to resemble physically reasonable spacetimes at large scales. Often, these configurations are entropically dominant and pose an obstacle to obtaining the desired classical limit. We examine this "entropy problem" in a model of causal set quantum gravity corresponding to a discretisation of 2D spacetimes. Using results from the theory of partial orders we show that, in the large volume or continuum limit, its partition function is dominated by causal sets which approximate to a region of 2D Minkowski space. This model of causal set quantum gravity thus overcomes the entropy problem and predicts the emergence of a physically reasonable geometry.
dc.descriptionCorrections and clarifications. Conclusions unchanged
dc.identifierhttps://arxiv.org/abs/0706.0375
dc.identifierhttp://arxiv.org/abs/0706.0375
dc.identifierClass.Quant.Grav.25:105025,2008
dc.identifierdoi:10.1088/0264-9381/25/10/105025
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200467
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleA 2D model of Causal Set Quantum Gravity: The emergence of the continuum
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