| Analysis of Possible Evolution of Dark Energy by Using a Power Series |
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| 作者姓名： | 王玮 桂元星 邵颖 |
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| 作者单位： | School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10573004. |
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| 摘 要： | We simulate the density of dark energy by using a power series to analyse the possible evolution of dark energy. The parameters are constrained from the newly released Cold sample of the supernova dataset. The evolutions of dark energy, as the power series from two free parameters to five free parameters, have the common and the different characters. We may conclude that either the density of dark energy possibly oscillates or increases after it decreases to a minimum value. Accordingly, the state equation of dark energy oscillates or evolves from ωde〉 -1 in the past to ωee〈 -1 around the present epoch.
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| 关 键 词： | 黑暗 能量 密度 参数 |
| 收稿时间： | 2007-1-19 |
| 修稿时间： | 2007-01-19 |
Analysis of Possible Evolution of Dark Energy by Using a Power Series |
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| WANG Wei,GUI Yuan-Xing,SHAO Ying.Analysis of Possible Evolution of Dark Energy by Using a Power Series[J].Chinese Physics Letters,2007,24(5):1414-1416. |
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| Authors: | WANG Wei GUI Yuan-Xing SHAO Ying |
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| Affiliation: | School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 |
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| Abstract: | |
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| Keywords: | 95 36 +x |
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