EFFECTS OF NEW VISCOSITY MODEL ON COSMOLOGICAL EVOLUTION
文献类型：期刊论文
| 作者 | Wang, JX ; Meng, XH |
| 刊名 | MODERN PHYSICS LETTERS A
 |
| 出版日期 | 2014 |
| 卷号 | 29期号:3页码:1450009 |
| 关键词 | BARYON ACOUSTIC-OSCILLATIONS PARAMETER MEASUREMENT CONSTRAINTS DARK ENERGY BULK VISCOSITY REDSHIFT EQUATION STATE |
| ISSN号 | 0217-7323 |
| 通讯作者 | Wang, JX (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China. |
| 英文摘要 | Bulk viscosity has been intrinsically existing in the observational cosmos evolution With various effects for different cosmological evolution stages endowed with complicated cosmic media. Normally in the idealised "standard cosmology", the physical viscosity effect Is often negligent to some extent by assumptions, except for galaxies formation and evolution or like the astro-physics phenomena. Actually we have not fully understood the physical origin and effects of cosmic viscosity, including its functions for the universe evolution in reality. In this paper, we extend the concept of temperature-dependent viscosity from classical statistical physics to observational cosmology, especially we examine the cosmological effects with the possibility of existence for two kinds of viscosity forms, which are described by the Chapman's relation and Sutherland's formula, respectively. By considering that a modification of Standard Model with viscosity named as ACDM-V model is constructed, which is acceptable according to astrophysical observations. In addition to the enhancement to cosmic age value, the ACDM-V model possesses other two pleasing features: the prediction about the no-rip/singularity future and the mechanism of smooth transition from imperfect cosmological models to perfect ones. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China [11075078, 10675062]; project of knowledge Innovation Program (PKIP) of Chinese Academy of Sciences (CAS) [KJCX2.YW.W10] |
| 原文出处 | http://dx.doi.org/10.1142/S0217732314500096 |
| 语种 | 英语 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15494]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Wang, JX,Meng, XH. EFFECTS OF NEW VISCOSITY MODEL ON COSMOLOGICAL EVOLUTION[J]. MODERN PHYSICS LETTERS A,2014,29(3):1450009. |
| APA | Wang, JX,&Meng, XH.(2014).EFFECTS OF NEW VISCOSITY MODEL ON COSMOLOGICAL EVOLUTION.MODERN PHYSICS LETTERS A,29(3),1450009. |
| MLA | Wang, JX,et al."EFFECTS OF NEW VISCOSITY MODEL ON COSMOLOGICAL EVOLUTION".MODERN PHYSICS LETTERS A 29.3(2014):1450009. |
入库方式： OAI收割
来源：理论物理研究所
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