Transient Crossing of Phantom divide line $w_Λ=-1$ under Gauss-Bonnet interaction

Details Transient Crossing of Phantom divide line $w_Λ=-1$ under Gauss-Bonnet interaction Transient Crossing of Phantom divide line $w_Λ=-1$ under Gauss-Bonnet interaction

2007-10-12

arxiv.org/abs/0710.2450v2

Gen.Rel.Grav.41:1511-1525,2009

Astronomy and Astrophysics

Astrophysics

9 pages, 9 figures

Scientific paper

10.1007/s10714-008-0718-1

Smooth double crossing of the phantom barrier $w_{\Lambda} = -1$ has been found possible in cosmological model with Gauss-Bonnet-scalar interaction, in the presence of background cold dark matter. Such crossing has been observed to be a sufficiently late time phenomena and independent of the sign of Gauss-Bonnet-scalar interaction. The luminosity distance versus redshift curve shows a perfect fit with the $\Lambda CDM$ model up to $z=3.5$.

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