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| Velten, H; Wang, JX; Meng, XH; Velten, H (reprint author), Univ Fed Espirito Santo, Dept Fs, BR-29060900 Vitoria, Espirito Santo, Brazil. | |
| Phantom dark energy as an effect of bulk viscosity | |
| Source Publication | PHYSICAL REVIEW D
 |
| Language | 英语 |
| Keyword | Baryon Acoustic-oscillations Probe Wmap Observations Cosmological Constant Problem Digital Sky Survey Driven Inflationary Viscous Cosmology Models Universe Thermodynamics Parameters |
| Abstract | In a homogeneous and isotropic universe bulk viscosity is the unique viscous effect that is capable of modifying the background dynamics. Effects like shear viscosity or heat conduction can only change the evolution of the perturbations. The existence of a bulk viscous pressure in a fluid-which in order to obey the second law of thermodynamics must be negative-reduces its effective pressure. We discuss the degeneracy in bulk viscous cosmologies and address the possibility that phantom dark energy cosmology could be caused by the existence of nonequilibrium pressure in any one of the cosmic components. We establish the conditions under which either viscous matter or radiation cosmologies can be mapped into the phantom dark energy scenario with constraints from multiple observational data sets. |
| 2013 | |
| ISSN | 1550-7998 |
| Volume | 88Issue:12Pages:123504 |
| Subject Area | Physics |
| Indexed By | SCI |
| Funding Organization | CNPq; Natural Science Foundation of China [11075078, 10675062]; Chinese Academy of Sciences (CAS) [KJCX2.YW.W10] ; CNPq; Natural Science Foundation of China [11075078, 10675062]; Chinese Academy of Sciences (CAS) [KJCX2.YW.W10] ; CNPq; Natural Science Foundation of China [11075078, 10675062]; Chinese Academy of Sciences (CAS) [KJCX2.YW.W10] ; CNPq; Natural Science Foundation of China [11075078, 10675062]; Chinese Academy of Sciences (CAS) [KJCX2.YW.W10] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/15212 |
| Collection | 理论物理所科研产出_SCI论文 |
| Corresponding Author | Velten, H (reprint author), Univ Fed Espirito Santo, Dept Fs, BR-29060900 Vitoria, Espirito Santo, Brazil. |
| Recommended Citation GB/T 7714 | Velten, H,Wang, JX,Meng, XH,et al. Phantom dark energy as an effect of bulk viscosity[J]. PHYSICAL REVIEW D,2013,88(12):123504. |
| APA | Velten, H,Wang, JX,Meng, XH,&Velten, H .(2013).Phantom dark energy as an effect of bulk viscosity.PHYSICAL REVIEW D,88(12),123504. |
| MLA | Velten, H,et al."Phantom dark energy as an effect of bulk viscosity".PHYSICAL REVIEW D 88.12(2013):123504. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Phantom dark energy （269KB） | 开放获取 | License | Application Full Text | |||
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