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2009

Is the future universe singular: Dark Matter versus modified gravity?

Nojiri, Shin'ichi, Odintsov, Sergei D.

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The fundamental problem of the occurrence/removal of finite-time future singularity in the universe evolution for coupled dark energy (DE) is addressed.

It is demonstrated the existence of the (instable or local minimum) de Sitter space solution which may cure the Type II or Type IV future singularity for DE coupled with DM as the result of tuning the initial conditions.
In case of phantom DE, the corresponding coupling may help to resolve the coincidence problem but not the Big Rip (Type I) singularity issue.
We show that modified gravity of special form or inhomogeneous DE fluid may offer the universal scenario to cure the Type I,II,III or IV future singularity of coupled (fluid or scalar) DE evolution.

Is the future universe singular: Dark Matter versus modified gravity? · Around

Built on

J. D. Barrow, Phys. Lett. B 235
1990
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R. R. Caldwell, Phys. Lett. B 545
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E. Elizalde, S. Nojiri and S. D. Odintsov, Phys. Rev. D 70
2004
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S. Nojiri, S. D. Odintsov and S. Tsujikawa, Phys. Rev. D 71
2005
Earlier work this paper cites.

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Then

S. Nojiri and S. D. Odintsov, eConf C0602061
2007
Later among the works it cites.
S. Nojiri and S. D. Odintsov, Phys. Rev. D 78
Original
2008
Later among the works it cites.
A. Dev, D. Jain, S. Jhingan, S. Nojiri, M. Sami and I. Thongkool, Phys. Rev. D 78
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2009
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