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Characteristics of the new phase in CDT
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Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
Characteristics of the new phase in CDT
Bibliographic description
| title: | Characteristics of the new phase in CDT |
| author: | Ambjørn J., Gizbert-Studnicki Jakub  , Görlich Andrzej , Jurkiewicz Jerzy , Klitgaard N., Loll R. |
| journal title: | The European Physical Journal. C, Particles and Fields |
| volume: | 77 |
| issue: | 3 |
| date of publication : | 2017 |
| article ID: | 152 |
| ISSN: |
1434-6044 |
| eISSN: |
1434-6052 |
| DOI: | |
| language: | English |
| journal language: | English |
| abstract in English: | The approach of Causal Dynamical Triangulations (CDT), a candidate theory of nonperturbative quantum gravity in 4D, turns out to have a rich phase structure. We investigate the recently discovered bifurcation phase CbCbC_{b} and relate some of its characteristics to the presence of singular vertices of very high order. The transition lines separating this phase from the "time-collapsed" B-phase and the de Sitter phase CdSCdSC_{dS} are of great interest when searching for physical scaling limits. The work presented here sheds light on the mechanisms behind these transitions. First, we study how the B–CbCbC_{b} transition signal depends on the volume fixing implemented in the simulations, and find results compatible with the previously determined second-order character of the transition. The transition persists in a transfer matrix formulation, where the system’s time extension is taken to be minimal. Second, we relate the new CbCbC_{b}–CdSCdSC_{dS} transition to the appearance of singular vertices, which leads to a direct physical interpretation in terms of a breaking of the homogeneity and isotropy observed in the de Sitter phase when crossing from CdSCdSC_{dS} to the bifurcation phase CbCbC_{b}. |
| affiliation: | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego |
| type: | journal article |
| subtype: | academic paper |
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Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
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