中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
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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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