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petergreen
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Introduction: A new cosmology based on the production of massless particles (in the early de Sitter phase) and ΛCDM particles (in the transition to a late time de Sitter stage) has been discussed. The same mechanism avoids the initial singularity, particle horizon and the late time coincidence problem of the ΛCDM model has been phenomenologically eliminated (Λ ≡ 0) because there is no dark energy in accelerating scenario. In particular, this means that the dark energy component may be only a “mirage” (an effective description), since it can be mimicked (globally and locally) by the gravitationally induced particle production mechanism acting in the evolving Universe.
Published in Phys. Rev. D 86, 103534 (2012) [11 pages]
http://link.aps.org/doi/10.1103/PhysRevD.86.103534
http://arxiv.org/pdf/1205.0868.pdf
http://www.weebly.com/uploads/1/5/3/4/15349588/1205.0868-001.gif
Published in Phys. Rev. D 86, 103534 (2012) [11 pages]
http://link.aps.org/doi/10.1103/PhysRevD.86.103534
http://arxiv.org/pdf/1205.0868.pdf
http://www.weebly.com/uploads/1/5/3/4/15349588/1205.0868-001.gif
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