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题名: Emergent universe in spatially flat cosmological model
作者: Zhang, KT ;  Wu, PX ;  Yu, HW
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2014
期号: 1
关键词: EINSTEIN STATIC UNIVERSE ;  TIME-LIKE DIMENSIONS ;  EXTRA TIME ;  MASS HIERARCHY ;  F(T) GRAVITY ;  STABILITY ;  DISAPPEARANCE ;  SINGULARITY ;  BRANEWORLD ;  MATTER
学科分类: Physics
DOI: 10.1088/1475-7516/2014/01/048
通讯作者: Yu, HW (reprint author), Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China.
部门归属: [Zhang, Kaituo; Yu, Hongwei] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China; [Zhang, Kaituo; Yu, Hongwei] Hunan Normal Univ, Minist Educ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha 410081, Hunan, Peoples R China; [Wu, Puxun; Yu, Hongwei] Ningbo Univ, Ctr Nonlinear Sci, Ningbo 315211, Zhejiang, Peoples R China; [Wu, Puxun; Yu, Hongwei] Ningbo Univ, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China; [Wu, Puxun; Yu, Hongwei] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: The scenario of an emergent universe provides a promising resolution to the big bang singularity in universes with positive or negative spatial curvature. It however remains unclear whether the scenario can be successfully implemented in a spatially flat universe which seems to be favored by present cosmological observations. In this paper, we study the stability of Einstein static state solutions in a spatially flat Shtanov-Sahni braneworld scenario. With a negative dark radiation term included and assuming a scalar field as the only matter energy component, we find that the universe can stay at an Einstein static state past eternally and then evolve to an inflation phase naturally as the scalar field climbs up its potential slowly. In addition, we also propose a concrete potential of the scalar field that realizes this scenario.
资助者: National Natural Science Foundation of China [10935013, 11075083, 11175093, 11222545, 11375092]; Zhejiang Provincial Natural Science Foundation of China [Z6100077, R6110518]; FANEDD [200922]; National Basic Research Program of China [2010CB832803]; SRFDP [20124306110001]; PCSIRT [IRT0964]; Hunan Provincial Natural Science Foundation of China [11JJ7001]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000331134400049
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15516
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Recommended Citation:
Zhang, KT,Wu, PX,Yu, HW. Emergent universe in spatially flat cosmological model[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014(1).
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