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The Evolution of Dilatonic Universe with a Double Exponential Potential

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Abstract

In this paper, dilaton in Weyl-Scaled induced gravitational theory is regarded as a candidate of dark energy. When the potential of dilaton field is taken as the form of a double exponential \(\lambda_1e^{-\beta_{1}\sigma}+\lambda_{2}e^{-\beta_{2}\sigma}\), we find that there exist attractor solutions in dilatonic dark energy model, and these attractors correspond to an equations of state \(\omega = -1\) and a cosmic density parameter \(\Omega_{\sigma} = 1\), which are important features for a dark energy model that can meet the current observations. We find out the sufficient condition of the existence of a late time de Sitter attractor.

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Authors and Affiliations

  1. Department of Mathematics and Science, Huaihai Institute of Technology, Lianyungang, 222005, P.R. China

    Z. G. Huang

  2. Department of Physics, Shanghai University, Shanghai, 200444, P.R. China

    H. Q. Lu, W. Fang & K. F. Zhang

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  1. Z. G. Huang
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  2. H. Q. Lu
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  3. W. Fang
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  4. K. F. Zhang
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Correspondence to Z. G. Huang.

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Huang, Z.G., Lu, H.Q., Fang, W. et al. The Evolution of Dilatonic Universe with a Double Exponential Potential. Astrophys Space Sci 305, 177–181 (2006). https://doi.org/10.1007/s10509-006-9061-8

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  • DOI: https://doi.org/10.1007/s10509-006-9061-8

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