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The evolution of the power law k-essence cosmology

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Abstract

We investigate the evolution of the power law k-essence field in FRWL spacetime. The autonomous dynamical system and critical points are obtained. The corresponding cosmological parameters, such as Ω ϕ and w ϕ , are calculated at these critical points. We find it is possible to achieve an equation of state crossing through −1 for k-essence field. The results we obtained indicate that the power law k-essence dark energy model can be compatible with observations.

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Acknowledgements

This study is supported in part by National Natural Science Foundation of China (Grant Nos. 11147028 and 11273010) and Hebei Provincial Natural Science Foundation of China (Grant Nos. A2011201147 and A2014201068).

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Authors and Affiliations

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

    Rongjia Yang, Bohai Chen & Jun Li

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

    Rongjia Yang

  3. Department of Physics, Institute of Theoretical Physics, Beijing Normal University, Beijing, 100875, China

    Jingzhao Qi

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  1. Rongjia Yang
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  2. Bohai Chen
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Correspondence to Rongjia Yang.

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Yang, R., Chen, B., Li, J. et al. The evolution of the power law k-essence cosmology. Astrophys Space Sci 356, 399–405 (2015). https://doi.org/10.1007/s10509-014-2218-y

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