The evolution of the power law k-essence cosmology

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• 作者：Rongjia Yang ; Bohai Chen ; Jun Li ; Jingzhao Qi
• 关键词：k ; Essence ; Dark energy ; Phase ; space analysis
• 刊名：Astrophysics and Space Science
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：356
• 期：2
• 页码：399-405
• 全文大小：394 KB
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• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Astronomy
  
• 出版者：Springer Netherlands
• ISSN：1572-946X

文摘

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 ? and w ? , are calculated at these critical points. We find it is possible to achieve an equation of state crossing through ? for k-essence field. The results we obtained indicate that the power law k-essence dark energy model can be compatible with observations.