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Termination of the phase of quintessence by gravitational back reaction
Li MZ(李明哲); Lin WB(林文斌); Zhang XM(张新民); Li, MZ; Lin, WB; Zhang, XM; Brandenberger, R
2002
发表期刊PHYSICAL REVIEW D
卷号65期号:2页码:23519
通讯作者Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; Brown Univ, Dept Phys, Providence, RI 02912 USA
文章类型Article
摘要We study the effects of gravitational back reaction in models of quintessence. The effective energy-momentum tensor with which cosmological fluctuations back react on the background metric will in some cases lead to a termination of the phase of acceleration. The fluctuations we make use of are the perturbations in our present Universe. Their amplitude is normalized by recent measurements of anisotropies in the cosmic microwave background; their slope is taken to be either scale invariant or characterized by a slightly blue tilt. In the latter case, we find that the back-reaction effect of fluctuations whose present wavelength is smaller than the Hubble radius but which are stretched beyond the Hubble radius by the accelerated expansion during the era of quintessence domination can become large. Since the back-reaction effects of these modes oppose acceleration, back reaction will lead to a truncation of the period of quintessence domination. This result impacts on the recent discussions of the potential incompatibility between string theory and quintessence.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.65.023519
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000173402500034
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240499
专题理论物理室
作者单位中国科学院高能物理研究所
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Li MZ,Lin WB,Zhang XM,et al. Termination of the phase of quintessence by gravitational back reaction[J]. PHYSICAL REVIEW D,2002,65(2):23519.
APA 李明哲.,林文斌.,张新民.,Li, MZ.,Lin, WB.,...&Brandenberger, R.(2002).Termination of the phase of quintessence by gravitational back reaction.PHYSICAL REVIEW D,65(2),23519.
MLA 李明哲,et al."Termination of the phase of quintessence by gravitational back reaction".PHYSICAL REVIEW D 65.2(2002):23519.
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