Universität zu Köln

Albarran, Imanol ORCID: 0000-0003-4278-9372, Bouhmadi-Lopez, Mariam ORCID: 0000-0002-1529-1889, Kiefer, Claus ORCID: 0000-0001-6163-9519, Marto, Joao ORCID: 0000-0003-3974-9177 and Moniz, Paulo Vargas (2016). Classical and quantum cosmology of the little rip abrupt event. Phys. Rev. D, 94 (6). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2470-0029

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Abstract

We analyze from a classical and quantum point of view the behavior of the Universe close to a little rip, which can be interpreted as a big rip sent towards the infinite future. Like a big rip singularity, a little rip implies the destruction of all bounded structures in the Universe and is thus an event where quantum effects could be important. We present here a new phantom scalar field model for the little rip. The quantum analysis is performed in quantum geometrodynamics, with the Wheeler-DeWitt equation as its central equation. We find that the little rip can be avoided in the sense of the DeWitt criterion, that is, by having a vanishing wave function at the place of the little rip. Therefore our analysis completes the answer to the question: can quantum cosmology smoothen or avoid the divergent behavior genuinely caused by phantom matter? We show that this can indeed happen for the little rip, similar to the avoidance of a big rip and a little sibling of the big rip.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Albarran, Imanol UNSPECIFIED orcid.org/0000-0003-4278-9372 UNSPECIFIED Bouhmadi-Lopez, Mariam UNSPECIFIED orcid.org/0000-0002-1529-1889 UNSPECIFIED Kiefer, Claus UNSPECIFIED orcid.org/0000-0001-6163-9519 UNSPECIFIED Marto, Joao UNSPECIFIED orcid.org/0000-0003-3974-9177 UNSPECIFIED Moniz, Paulo Vargas UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-261937
DOI:	10.1103/PhysRevD.94.063536
Journal or Publication Title:	Phys. Rev. D
Volume:	94
Number:	6
Date:	2016
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2470-0029
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ROBERTSON-WALKER COSMOLOGY; BEHAVIOR; EQUATION; GRAVITY; ENERGY; STATE; FIELD Multiple languages Astronomy & Astrophysics; Physics, Particles & Fields Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26193