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arXiv · 1604.08365

Classical and quantum cosmology of the little rip abrupt event

Imanol Albarran·Mariam Bouhmadi-López·Claus Kiefer·João Marto·Paulo Vargas Moniz
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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 structure 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.

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Imanol Albarran, Mariam Bouhmadi-López, Claus Kiefer, João Marto, Paulo Vargas Moniz. 2016-09-10. Classical and quantum cosmology of the little rip abrupt event. https://doi.org/10.1103/physrevd.94.063536

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