New generalized Chaplygin gas as a scheme for unification of dark energy and dark matter
文献类型：期刊论文
| 作者 | Zhang X(张欣); Wu FQ(吴锋泉); Zhang, X; Wu, FQ; Zhang, JF
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| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2006 |
| 期号 | 1页码:3 |
| 关键词 | dark matter dark energy theory supernova type Ia |
| 通讯作者 | CCAST, World Lab, Beijing 100080, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China |
| 英文摘要 | We propose in this paper a new model for describing the unification of dark energy and dark matter. This new model is a further generalization of the generalized Chaplygin gas (GCG) model, thus dubbed new generalized Chaplygin gas (NGCG) model. The equation of state of the NGCG is given by p = -(A) over cap (a)/p(alpha), where a is the scale factor and (A) over cap (a) = - w(X)Aa(-3(1+ wX)(1+ a)). We show that the NGCG model is totally dual to an interacting XCDM parametrization scenario, in which the interaction between dark energy and dark matter is characterized by the constant a. We discuss the cosmological consequences led by such a unified dark sector model. Furthermore, we perform a state under analysis on this scenario and show the discrimination between this scenario and other dark energy models. Finally, a combined analysis of the data of type Ia supernovae, cosmic microwave background, and large scale structure provides a fairly tight constraint on the parameters of the NGCG model. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 研究领域[WOS] | Astronomy & Astrophysics ; Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000235045400024 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/240344]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhang X,Wu FQ,Zhang, X,et al. New generalized Chaplygin gas as a scheme for unification of dark energy and dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2006(1):3. |
| APA | 张欣,吴锋泉,Zhang, X,Wu, FQ,&Zhang, JF.(2006).New generalized Chaplygin gas as a scheme for unification of dark energy and dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(1),3. |
| MLA | 张欣,et al."New generalized Chaplygin gas as a scheme for unification of dark energy and dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .1(2006):3. |
入库方式： OAI收割
来源：高能物理研究所
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