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Asymptotically safe phantom cosmology

  • Regular Article - Theoretical Physics
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Abstract

We consider quantum modifications to phantom cosmology in a Friedmann–Robertson–Walker spacetime. The cosmological evolution equations improved by the renormalization group are obtained. For exponential potential, we find two types of cosmological fixed point; the renormalization group scale either freezes in, or continues to evolve with scale factor. We discuss the implications of each of these points, and investigate especially whether the big rip can be avoided. If the fixed point of renormalization group flow coincides with the cosmological fixed point, the universe will be dominated by dark matter and will be free from the big rip.

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Authors and Affiliations

  1. College of Physical Science and Technology, Hebei University, Baoding, 071002, China

    Rong-Jia Yang

  2. Department of Physics, Tsinghua University, Beijing, 100084, China

    Rong-Jia Yang

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  1. Rong-Jia Yang
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Correspondence to Rong-Jia Yang.

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Yang, RJ. Asymptotically safe phantom cosmology. Eur. Phys. J. C 72, 1948 (2012). https://doi.org/10.1140/epjc/s10052-012-1948-7

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  • DOI: https://doi.org/10.1140/epjc/s10052-012-1948-7

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