| Growth index of DGP model and current growth rate data | |
| Wei, Hao | |
| 2010-05-06 ; 2010-05-06 | |
| 关键词 | HUBBLE-SPACE-TELESCOPE DIGITAL SKY SURVEY COSMOLOGICAL CONSTANT PROBLEM HIGH-REDSHIFT SUPERNOVAE PROBE WMAP OBSERVATIONS DARK ENERGY COSMIC ACCELERATION POWER SPECTRUM LEGACY SURVEY CONSTRAINTS Physics, Multidisciplinary |
| 中文摘要 | Recently, some efforts focus on differentiating dark energy and modified gravity with the growth function delta(z). In the literature, it is useful to parameterize the growth rate f d ln delta/d ln a = Omega(gamma)(m) with the growth index gamma. In this Letter, we consider the general DGP model with any Omega(k). We confront the growth index of DGP model with currently available growth rate data and find that the DGP model is still consistent with it. This implies that more and better growth rate data are required to distinguish between dark energy and modified gravity. (C) 2008 Elsevier B.V. All rights reserved. |
| 语种 | 英语 ; 英语 |
| 出版者 | ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/15431]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Wei, Hao. Growth index of DGP model and current growth rate data[J],2010, 2010. |
| APA | Wei, Hao.(2010).Growth index of DGP model and current growth rate data.. |
| MLA | Wei, Hao."Growth index of DGP model and current growth rate data".(2010). |
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