Resonant multiple peaks in the induced gravitational waves

doi:10.1088/1475-7516/2019/05/013

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	Resonant multiple peaks in the induced gravitational waves
	Cai, RG ; Pi, S 1; Wang, SJ ; Yang, XY
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2019
期号	5 页码:13
关键词	BOUNCING COSMOLOGIES
ISSN号	1475-7516
DOI	10.1088/1475-7516/2019/05/013
英文摘要	We identify analytically a multiple-peak structure in the energy-density spectrum of induced gravitational waves (GWs) generated at second-order from primordial scalar perturbations also with multiple (n) peaks at small scales k(i). The energy-density spectrum of induced GWs exhibits at most C(n+1)(2)and at least n peaks at wave-vectors kij equivalent to (k(i) + k(*j)) / root 3 due to resonant ampli fi cation, and, under the narrow-width approximation, it contains an universal factor that can be interpreted as a result of momentum conservation. We also extend these discussions to the case of non-Gaussian perturbations.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23442]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China 2.Univ Tokyo, Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Chiba, Chiba 2778583, Japan 3.Tufts Univ, Dept Phys & Astron, Tufts Inst Cosmol, 574 Boston Ave, Medford, MA 02155 USA 4.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cai, RG,Pi, S,Wang, SJ,et al. Resonant multiple peaks in the induced gravitational waves[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2019(5):13.
APA	Cai, RG,Pi, S,Wang, SJ,&Yang, XY.(2019).Resonant multiple peaks in the induced gravitational waves.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(5),13.
MLA	Cai, RG,et al."Resonant multiple peaks in the induced gravitational waves".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .5(2019):13.