Cosmology without time: What to do with a possible signature change from quantum gravitational origin?
2016
Online
unknown
Zugriff:
Within some approaches to loop quantum cosmology, the existence of an Euclidean phase at high density has been suggested. In this article, we try to explain clearly what are the observable consequences of this possible disappearance of time. Depending on whether it is a real fundamental effect or just an instability in the equation of motion, we show that very different conclusions should be drawn. We finally mention some possible consequences of this phenomenon in the black hole sector.
Invited contribution for CQQ
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Cosmology without time: What to do with a possible signature change from quantum gravitational origin?
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| Autor/in / Beteiligte Person: | Barrau, A. ; Grain, J. ; Laboratoire de Physique Subatomique et de Cosmologie (LPSC) ; Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) ; Institut d'astrophysique spatiale (IAS) ; Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
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| Veröffentlichung: | 2016 |
| Medientyp: | unknown |
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