ITP OpenIR  > 理论物理所科研产出  > SCI论文
Zhang, XY; Zhang, Q; Huang, YC; Zhang, XY (reprint author), Beijing Univ Technol, Inst Theoret Phys, Beijing 100124, Peoples R China.
The Dark Energy Properties of the Dirac-Born-Infeld Action
Source PublicationENTROPY
Language英语
KeywordCosmological Constant Inflationary Universe Brane Inflation Constraints Flatness Horizon Field Model
AbstractIntroducing 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.
2012
ISSN1099-4300
Volume14Issue:7Pages:1203-1220
Subject AreaPhysics
Indexed BySCI
Funding OrganizationChinese Academy of Sciences [KJCX2. YW. W10]; National Natural Science Foundation of China [10875009]; Beijing Natural Science Foundation [1072005] ; Chinese Academy of Sciences [KJCX2. YW. W10]; National Natural Science Foundation of China [10875009]; Beijing Natural Science Foundation [1072005] ; Chinese Academy of Sciences [KJCX2. YW. W10]; National Natural Science Foundation of China [10875009]; Beijing Natural Science Foundation [1072005] ; Chinese Academy of Sciences [KJCX2. YW. W10]; National Natural Science Foundation of China [10875009]; Beijing Natural Science Foundation [1072005]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15069
Collection理论物理所科研产出_SCI论文
Corresponding AuthorZhang, XY (reprint author), Beijing Univ Technol, Inst Theoret Phys, Beijing 100124, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, XY,Zhang, Q,Huang, YC,et al. The Dark Energy Properties of the Dirac-Born-Infeld Action[J]. ENTROPY,2012,14(7):1203-1220.
APA Zhang, XY,Zhang, Q,Huang, YC,&Zhang, XY .(2012).The Dark Energy Properties of the Dirac-Born-Infeld Action.ENTROPY,14(7),1203-1220.
MLA Zhang, XY,et al."The Dark Energy Properties of the Dirac-Born-Infeld Action".ENTROPY 14.7(2012):1203-1220.
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