NAOC Open IR  > 星系宇宙学研究部
Cosmological models with Lagrange multiplier field
Gao, Changjun1,2; Gong, Yan1,3; Wang, Xin1,3; Chen, Xuelei1,2,4
2011-08-11
发表期刊PHYSICS LETTERS B
卷号702期号:2-3页码:107-113
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.
关键词Lagrange Multiplier Einstein-aether Theory Quintessence Dark Energy Dark Matter
DOI10.1016/j.physletb.2011.06.085
收录类别SCI
语种英语
WOS记录号WOS:000293928600001
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8061
专题星系宇宙学研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Gao, Changjun,Gong, Yan,Wang, Xin,et al. Cosmological models with Lagrange multiplier field[J]. PHYSICS LETTERS B,2011,702(2-3):107-113.
APA Gao, Changjun,Gong, Yan,Wang, Xin,&Chen, Xuelei.(2011).Cosmological models with Lagrange multiplier field.PHYSICS LETTERS B,702(2-3),107-113.
MLA Gao, Changjun,et al."Cosmological models with Lagrange multiplier field".PHYSICS LETTERS B 702.2-3(2011):107-113.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Gao, Changjun]的文章
[Gong, Yan]的文章
[Wang, Xin]的文章
百度学术
百度学术中相似的文章
[Gao, Changjun]的文章
[Gong, Yan]的文章
[Wang, Xin]的文章
必应学术
必应学术中相似的文章
[Gao, Changjun]的文章
[Gong, Yan]的文章
[Wang, Xin]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。