Cosmological models with Lagrange multiplier field
文献类型：期刊论文
| 作者 | Gao, CJ ; Gong, Y ; Wang, X ; Chen, XL |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2011 |
| 卷号 | 702期号:41308页码:107-113 |
| 关键词 | HOLOGRAPHIC DARK ENERGY PREFERRED-FRAME THEORIES EQUATION-OF-STATE RELATIVISTIC GRAVITY COSMIC ACCELERATION CONSERVATION LAWS UNIVERSE CONSTANT QUINTESSENCE TRANSITION |
| ISSN号 | 0370-2693 |
| 通讯作者 | Gao, CJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China. |
| 英文摘要 | We first consider the Einstein-aether theory with a gravitational coupling and a Lagrange multiplier field, and then consider the non-minimally coupled quintessence field theory with Lagrange multiplier field. We study the influence of the Lagrange multiplier field on these models. We show that the energy density evolution of the Einstein-aether field and the quintessence field are significantly modified. The energy density of the Einstein-aether is nearly a constant during the entire history of the Universe. The energy density of the quintessence field can also be kept nearly constant in the matter dominated Universe, or even exhibit a phantom-like behavior for some models. This suggests a possible dynamical origin of the cosmological constant or dark energy. Further more, for the canonical quintessence in the absence of gravitational coupling, we find that the quintessence scalar field can play the role of cold dark matter with the introduction of a Lagrange multiplier field. We conclude that the Lagrange multiplier field could play a very interesting and important role in the construction of cosmological models. (C) 2011 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [10533010, 10575004, 10973014]; 973 Project [2010CB833004] |
| 原文出处 | http://dx.doi.org/10.1016/j.physletb.2011.06.085 |
| 语种 | 英语 |
| WOS记录号 | WOS:000293928600001 |
| 公开日期 | 2013-05-17 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14291]  |
| 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 | Gao, CJ,Gong, Y,Wang, X,et al. Cosmological models with Lagrange multiplier field[J]. PHYSICS LETTERS B,2011,702(41308):107-113. |
| APA | Gao, CJ,Gong, Y,Wang, X,&Chen, XL.(2011).Cosmological models with Lagrange multiplier field.PHYSICS LETTERS B,702(41308),107-113. |
| MLA | Gao, CJ,et al."Cosmological models with Lagrange multiplier field".PHYSICS LETTERS B 702.41308(2011):107-113. |
入库方式： OAI收割
来源：理论物理研究所
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