Phase-space analysis of interacting phantom cosmology

By Xi-ming Chen, Y. Gong, Emmanuel N. Saridakis. 2008

160 citations recorded by the source corpus.

We perform a detailed phase-space analysis of various phantom cosmological models, where the dark energy sector interacts with the dark matter one. We examine whether there exist late-time scaling attractors, corresponding to an accelerating universe and possessing dark energy and dark matter densities of the same order. We find that all the examined models, although accepting stable late-time accelerated solutions, cannot alleviate the coincidence problem, unless one imposes a form of fine-tuning in the model parameters. It seems that interacting phantom cosmology cannot fulfill the basic requirement that led to its construction.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/347b4259760f0a821974881edab0a44440e0cccd

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Hořava–Lifshitz dark energy (2009, methodology): “, one still cannot distinguish between this model and alternative models that allow for the realization of wDE < −1 phase, such are modiﬁed gravity [113, 114, 115, 116, 117] or models with phantom [106, 118, 119, 120] or quintom ﬁelds [121, 122, 123, 124, 125]. In ordertoprovide anexplicit but ge”