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  Spacetime condensation in (2+1)-dimensional CDT from a Horava-Lifshitz minisuperspace model

Benedetti, D., & Henson, J. (2015). Spacetime condensation in (2+1)-dimensional CDT from a Horava-Lifshitz minisuperspace model. Classical and quantum gravity, 32(21): 215007. doi:10.1088/0264-9381/32/21/215007.

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 Urheber:
Benedetti, Dario1, Autor           
Henson, Joe, Autor
Affiliations:
1Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_67201              

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Schlagwörter: General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
 Zusammenfassung: A spacetime condensation phenomenon underlies the emergence of a macroscopic
universe in causal dynamical triangulations, where the time extension of the
condensate is strictly smaller than the total time. It has been known for some
time that the volumes of spatial slices in the bulk of the macroscopic universe
follow a time evolution which resembles that of a sphere, and their effective
dynamics is well described by a minisuperspace reduction of the general
relativistic action. More recently, it has been suggested that the same
minusuperspace model can also provide an understanding of the condensation
phenomenon itself, thus explaining the presence of an extended droplet of
spacetime connected to a stalk of minimal spatial extension. We show here that
a minisuperspace model based on the general relativistic action fails in that
respect for the (2+1)-dimensional case, while a successful condensation is
obtained from a minisuperspace model of Horava-Lifshitz gravity.

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 Datum: 2014-10-032015
 Publikationsstatus: Erschienen
 Seiten: 30 pages, 5 figures
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: arXiv: 1410.0845
DOI: 10.1088/0264-9381/32/21/215007
 Art des Abschluß: -

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Titel: Classical and quantum gravity
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Bristol, U.K. : Institute of Physics
Seiten: - Band / Heft: 32 (21) Artikelnummer: 215007 Start- / Endseite: - Identifikator: ISSN: 0264-9381
CoNE: https://pure.mpg.de/cone/journals/resource/954925513480_1