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Pseudo-Cartesian coordinates in a model of Causal Dynamical Triangulations

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Pseudo-Cartesian coordinates in a model of Causal Dynamical Triangulations

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dc.contributor.author Ambjorn, J. pl
dc.contributor.author Drogosz, Zbigniew [USOS160113] pl
dc.contributor.author Gizbert-Studnicki, Jakub [SAP14011527] pl
dc.contributor.author Görlich, Andrzej [SAP13902753] pl
dc.contributor.author Jurkiewicz, Jerzy [SAP11006413] pl
dc.date.accessioned 2019-10-31T14:01:22Z
dc.date.available 2019-10-31T14:01:22Z
dc.date.issued 2019 pl
dc.identifier.issn 0550-3213 pl
dc.identifier.uri https://ruj.uj.edu.pl/xmlui/handle/item/86276
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/pl/legalcode *
dc.title Pseudo-Cartesian coordinates in a model of Causal Dynamical Triangulations pl
dc.type JournalArticle pl
dc.abstract.en Causal Dynamical Triangulations is a non-perturbative quantum gravity model, defined with a lattice cut-off. The model can be viewed as defined with a proper time but with no reference to any three-dimensional spatial background geometry. It has four phases, depending on the parameters (the coupling constants) of the model. The particularly interesting behavior is observed in the so-called de Sitter phase, where the spatial three-volume distribution as a function of proper time has a semi-classical behavior which can be obtained from an effective mini-superspace action. In the case of the three-sphere spatial topology, it has been difficult to extend the effective semi-classical description in terms of proper time and spatial three-volume to include genuine spatial coordinates, partially because of the background independence inherent in the model. However, if the spatial topology is that of a three-torus, it is possible to define a number of new observables that might serve as spatial coordinates as well as new observables related to the winding numbers of the three-dimensional torus. The present paper outlines how to define the observables, and how they can be used in numerical simulations of the model. pl
dc.description.volume 943 pl
dc.identifier.doi 10.1016/j.nuclphysb.2019.114626 pl
dc.identifier.eissn 1873-1562 pl
dc.title.journal Nuclear Physics. B pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.identifier.articleid 114626 pl
dc.rights.original CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / OP pl
.pointsMNiSW [2019 A]: 140


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Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa