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Cosmic Evolution of Scalar Fields with Multiple Vacua: Generalized DBI and Quintessence

文献类型：期刊论文

作者Gao, Changjun1,2; Shen, You-Gen3
刊名INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
出版日期2016-10-01
卷号55期号:10页码:4532-4544
关键词Quintessence DBI field
英文摘要We find a method to rewrite the equations of motion of scalar fields, generalized DBI field and quintessence, in the autonomous form for arbitrary scalar potentials. With the aid of this method, we explore the cosmic evolution of generalized DBI field and quintessence with the potential of multiple vacua. Then we find that the scalars are always frozen in the false or true vacuum in the end. Compared to the evolution of quintessence, the generalized DBI field has more times of oscillations around the vacuum of the potential. The reason for this point is that, with the increasing of speed , the friction term of generalized DBI field is greatly decreased. Thus the generalized DBI field acquires more times of oscillations.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Physics, Multidisciplinary
研究领域[WOS]Physics
关键词[WOS]COSMOLOGICAL SCALING SOLUTIONS ; CONSTANT ; POTENTIALS ; UNIVERSE ; FATE
收录类别SCI
语种英语
WOS记录号WOS:000383771400032
源URL[http://ir.bao.ac.cn/handle/114a11/6783]  
专题国家天文台_星系宇宙学研究部
作者单位1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Gao, Changjun,Shen, You-Gen. Cosmic Evolution of Scalar Fields with Multiple Vacua: Generalized DBI and Quintessence[J]. INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,2016,55(10):4532-4544.
APA Gao, Changjun,&Shen, You-Gen.(2016).Cosmic Evolution of Scalar Fields with Multiple Vacua: Generalized DBI and Quintessence.INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,55(10),4532-4544.
MLA Gao, Changjun,et al."Cosmic Evolution of Scalar Fields with Multiple Vacua: Generalized DBI and Quintessence".INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 55.10(2016):4532-4544.

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来源：国家天文台

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