Probing noncommutativity with inflationary gravitational waves

	Probing noncommutativity with inflationary gravitational waves
	Cai YF(蔡一夫); Cai, YF; Piao, YS
刊名	PHYSICS LETTERS B
	2007
卷号	657 期号:1-3 页码:1-9
通讯作者	Cai, YF (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China.
英文摘要	In this Letter we study the behaviour of gravitational wave background (GWB) generated during inflation in the noncommutative field approach. From this approach we derive one additional term, and then we find that the dispersion relation of the gravitational wave would be modified and the primordial gravitational wave would obtain an effective mass. Therefore it breaks local Lorentz symmetry. Moreover, this additional term suppresses the energy spectrum of the GWB greatly at low energy scale where the wave length is near the current horizon. Due to this, a sharp peak is formed in the energy spectrum at the low frequency band. This peak should be a key criterion in detecting the space-time noncommutativity and a critical test for Lorentz symmetry breaking in local field theory. (C) 2007 Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000251595600001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225437]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Cai YF,Cai, YF,Piao, YS. Probing noncommutativity with inflationary gravitational waves[J]. PHYSICS LETTERS B,2007,657(1-3):1-9.
APA	蔡一夫,Cai, YF,&Piao, YS.(2007).Probing noncommutativity with inflationary gravitational waves.PHYSICS LETTERS B,657(1-3),1-9.
MLA	蔡一夫,et al."Probing noncommutativity with inflationary gravitational waves".PHYSICS LETTERS B 657.1-3(2007):1-9.