The variable cosmological constant and dynamics of dark energy
文献类型：期刊论文
| 作者 | Shao, Guo-yun1,2; Liu, Yu-xin1,2,3 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2009-09-28 |
| 卷号 | 680页码:199-204 |
| 关键词 | Interacting dark energy Weak gravity conjecture |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2009.08.064 |
| 英文摘要 | We study the variable cosmological constant model with the interaction between dark energy and matter. By constructing the dark energy component as an effective quintessence scalar field, we give an upper limit of parameter in with weak gravity conjecture which requires that the variation of the scalar field Delta phi should be less than the Planck mass M-p. On the other hand, we constrain the model parameters with recent type Ia supernovae and WMAP five-year observation, which gives a consistent result with weak gravity conjecture. The combination of these observational data restricts the model parameters within narrow ranges with Omega(m0) = 0.276(-0.017)(+0.020) 0 <= m <= 0.075, showing that weak interaction between dark energy and matter is favored in this model. The involving behaviors of relative densities Omega(m)(z). Omega(de)(z) and decelerated parameter q(z) are also Studied with the constrained parameters. (C) 2009 Elsevier B.V. All rights reserved. |
| WOS关键词 | WEAK GRAVITY CONJECTURE ; DECAYING LAMBDA-COSMOLOGIES ; PROBE WMAP OBSERVATIONS ; HUBBLE-SPACE-TELESCOPE ; DIGITAL SKY SURVEY ; EQUATION-OF-STATE ; NONFLAT UNIVERSE ; QUINTOM MODEL ; VACUUM ENERGY ; CONSTRAINTS |
| 资助项目 | National Natural Science Foundation of China[10425521] ; National Natural Science Foundation of China[10575004] ; National Natural Science Foundation of China[10675007] ; Major State Basic Research Development Program[G2007CB815000] ; Key Grant Project of Chinese Ministry of Education (CMOE)[305001] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000270618200001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; Major State Basic Research Development Program ; Key Grant Project of Chinese Ministry of Education (CMOE) |
| 源URL | [http://119.78.100.186/handle/113462/31164]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Shao, Guo-yun |
| 作者单位 | 1.Peking Univ, Dept Phys, Beijing 100871, Peoples R China 2.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 3.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shao, Guo-yun,Liu, Yu-xin. The variable cosmological constant and dynamics of dark energy[J]. PHYSICS LETTERS B,2009,680:199-204. |
| APA | Shao, Guo-yun,&Liu, Yu-xin.(2009).The variable cosmological constant and dynamics of dark energy.PHYSICS LETTERS B,680,199-204. |
| MLA | Shao, Guo-yun,et al."The variable cosmological constant and dynamics of dark energy".PHYSICS LETTERS B 680(2009):199-204. |
入库方式： OAI收割
来源：近代物理研究所
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