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The semiclassical limit of causal dynamical triangulations

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Publication date

2011-08-01

Authors

Ambjørn, J.
Görlich, A.T.
Jurkiewicz, J.
Loll, R.ISNI 0000000012158682
Gizbert-Studnicki, J.
Trześniewski, T.

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DOI

https://doi.org/10.1016/j.nuclphysb.2011.03.019

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Article

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Abstract

Previous work has shown that the macroscopic structure of the theory of quantum gravity defined by causal dynamical triangulations (CDT) is compatible with that of a de Sitter universe. After emphasizing the strictly nonperturbative nature of this semiclassical limit we present a detailed study of the three-volume data, which allows us to re-confirm the de Sitter structure, exhibit short-distance discretization effects, and make a first detailed investigation of the presence of higher-order curvature terms in the effective action for the scale factor. Technically, we make use of a novel way of fixing the total four-volume in the simulations

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Ambjørn, J, Görlich, A T, Jurkiewicz, J, Loll, R, Gizbert-Studnicki, J & Trześniewski, T 2011, 'The semiclassical limit of causal dynamical triangulations', Nuclear Physics B, vol. 849, no. 1, pp. 144-165. https://doi.org/10.1016/j.nuclphysb.2011.03.019

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http://hdl.handle.net/1874/233987