Preheating a bouncing universe

	Preheating a bouncing universe
	Cai, YF; Brandenberger, R; Zhang XM(张新民); Zhang, XM
刊名	PHYSICS LETTERS B
	2011
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
英文摘要	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.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000295105300005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/236793]
专题	高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	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.