Abstract
We investigate the interacting agegraphic dark energy in Brans–Dicke theory and introduce a new series general forms of dark sector coupling. As examples, we select three cases involving a linear interaction form (Model I) and two nonlinear interaction form (Model II and Model III). Our conclusions show that the accelerated scaling attractor solutions do exist in these models. We also find that these interacting agegraphic dark energy modes are consistent with the observational data. The difference in these models is that nonlinear interaction forms give more approached evolution to the standard ΛCDM model than the linear one. Our work implies that the nonlinear interaction forms should be payed more attention.
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Acknowledgements
The authors would like to thank the anonymous referee for his/her insightful and constructive suggestions, which allowed us to improve the manuscript significantly. This work is supported by the National Natural Science Foundation of China under Grant Nos. 10773002, 10875012, and 11175019. It is also supported by the Fundamental Research Funds for the Central Universities under Grant No. 105116.
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Liu, XM., Zhai, ZX., Xiao, K. et al. The accelerated scaling attractor solution of the interacting agegraphic dark energy in Brans–Dicke theory. Eur. Phys. J. C 72, 2057 (2012). https://doi.org/10.1140/epjc/s10052-012-2057-3
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DOI: https://doi.org/10.1140/epjc/s10052-012-2057-3