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INDUCED PHANTOM AND 5D ATTRACTOR SOLUTION IN SPACETIME–MATTER THEORY

HONGYA LIU

Department of Physics, Dalian University of Technology, Dalian, Liaoning 116024, P. R. China

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HUANYING LIU

Department of Physics, Dalian University of Technology, Dalian, Liaoning 116024, P. R. China

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BAORONG CHANG

Department of Physics, Dalian University of Technology, Dalian, Liaoning 116024, P. R. China

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, and

LIXIN XU

Department of Physics, Dalian University of Technology, Dalian, Liaoning 116024, P. R. China

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https://doi.org/10.1142/S0217732305017366Cited by:18 (Source: Crossref)

Abstract

In Spacetime–Matter theory we assume that the 4D induced matter of the 5D Ricci-flat bouncing cosmological solutions contains a perfect fluid as well as an induced scalar field. Then we show that the conventional 4D quintessence and phantom models of dark energy could be recovered from the 5D cosmological solutions. By using the phase-plane analysis to study the stability of evolution of the 5D models, we find that the conventional 4D late-time attractor solution is also recovered. This attractor solution shows that the scale factors of the phantom dominated universes in both the 4D and 5D theories will reach infinity in a finite time and the universes will be ended at a new kind of spacetime singularity at which everything will be annihilated. We also find that the repulsive force of the phantom may provide us with a mechanics to explain the bounce.

Keywords:

PACS: 04.50.+h, 98.80.-k

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