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题名: The Dark Energy Properties of the Dirac-Born-Infeld Action
作者: Zhang, XY ;  Zhang, Q ;  Huang, YC
刊名: ENTROPY
出版日期: 2012
卷号: 14, 期号:7, 页码:1203-1220
关键词: COSMOLOGICAL CONSTANT ;  INFLATIONARY UNIVERSE ;  BRANE INFLATION ;  CONSTRAINTS ;  FLATNESS ;  HORIZON ;  FIELD ;  MODEL
学科分类: Physics
通讯作者: Zhang, XY (reprint author), Beijing Univ Technol, Inst Theoret Phys, Beijing 100124, Peoples R China.
部门归属: [Zhang, Xinyou; Huang, Yongchang] Beijing Univ Technol, Inst Theoret Phys, Beijing 100124, Peoples R China; [Zhang, Qing] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England; [Huang, Yongchang] Chinese Acad Sci, Kavli Inst Theoret Phys, Beijing 100080, Peoples R China; [Huang, Yongchang] CCAST World Lab, Beijing 100080, Peoples R China
英文摘要: Introducing a new potential, we deduce a general Lagrangian for Dirac-Born-Infeld (DBI) inflation, in which the determinant of the induced metric naturally includes the kinetic energy and the potential energy. In particular, the potential energy and kinetic energy can convert into each other at any same order, which is in agreement with the limit of classical physics. We also present a general sound speed in the evolutions of the universe, and the exact expressions of energy-momentum tensor, pressure and density. Furthermore, from the results we obtain the new equation of states. The analytic form of the action that is consistent with data turns out to be surprisingly simple and easy to categorize. Finally, we examine properties of the dark energy and introduce a novel mechanism for realizing either quintessence or phantom dark energy dominated phases within a string theoretical context.
资助者: Chinese Academy of Sciences [KJCX2. YW. W10]; National Natural Science Foundation of China [10875009]; Beijing Natural Science Foundation [1072005]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000306748500006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15069
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Zhang, XY,Zhang, Q,Huang, YC. The Dark Energy Properties of the Dirac-Born-Infeld Action[J]. ENTROPY,2012,14(7):1203-1220.
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