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Preheating a bouncing universe
Cai, YF; Brandenberger, R; Zhang XM(张新民); Zhang, XM
2011
发表期刊PHYSICS LETTERS B
卷号703期号:1页码:25-33
通讯作者[Cai, Yi-Fu] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA ; [Brandenberger, Robert] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada ; [Zhang, Xinmin] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Zhang, Xinmin] Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China
摘要Preheating describes the stage of rapidly depositing the energy of cosmological scalar field into excitations of other light fields. This stage is characterized by exponential particle production due to the parametric resonance. We study this process in the frame of matter bounce cosmology. Our results show that the preheating process in bouncing cosmology is even more efficient than that in inflationary cosmology. In the limit of weak coupling, the period of preheating is doubled. For the case of normal coupling, the back-reaction of light fields can lead to thermalization before the bouncing point. The scenario of matter bounce curvaton could be tightly constrained due to a large coupling coefficient if the curvaton field is expected to preheat the universe directly. However, this concern can be greatly relaxed through the process of geometric preheating. (C) 2011 Elsevier B.V. All rights reserved.
文章类型Article
学科领域Physics
研究领域[WOS]Physics
DOI10.1016/j.physletb.2011.07.074
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语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000295105300005
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被引频次:49[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/236793
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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Cai, YF,Brandenberger, R,Zhang XM,et al. Preheating a bouncing universe[J]. PHYSICS LETTERS B,2011,703(1):25-33.
APA Cai, YF,Brandenberger, R,张新民,&Zhang, XM.(2011).Preheating a bouncing universe.PHYSICS LETTERS B,703(1),25-33.
MLA Cai, YF,et al."Preheating a bouncing universe".PHYSICS LETTERS B 703.1(2011):25-33.
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