A full fixed-point and stability analysis shows a non-minimally coupled scalar plus apparent-horizon holographic dark energy yields a stiff-fluid to dust to dark-energy history only for small negative ξ and tiny c, with w_eff always approaching -1 at late times.
Holographic dark energy with non-minimal coupling
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We study a scalar field non-minimally coupled to the curvature, in the framework of holographic dark energy. We obtain a relation between the coupling of the scalar field and the holographic DE parameters. In the model without potential we found the EOS parameter in different regions of the parameters, giving rise to accelerated expansion. For some restrictions on the parameters, the model presents quintom behavior.
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Cosmological dynamics of holographic dark energy with non-minimally coupled scalar field
A full fixed-point and stability analysis shows a non-minimally coupled scalar plus apparent-horizon holographic dark energy yields a stiff-fluid to dust to dark-energy history only for small negative ξ and tiny c, with w_eff always approaching -1 at late times.