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arxiv: hep-th/0510183 · v2 · submitted 2005-10-21 · ✦ hep-th · astro-ph· gr-qc

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Dark energy problem: from phantom theory to modified Gauss-Bonnet gravity

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classification ✦ hep-th astro-phgr-qc
keywords phantomaccelerationdarkenergygauss-bonnetgravitylate-timemodified
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The solution of dark energy problem in the models without scalars is presented. It is shown that late-time accelerating cosmology may be generated by the ideal fluid with some implicit equation of state. The universe evolution within modified Gauss-Bonnet gravity is considered. It is demonstrated that such gravitational approach may predict the (quintessential, cosmological constant or transient phantom) acceleration of the late-time universe with natural transiton from deceleration to acceleration (or from non-phantom to phantom era in the last case).

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