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题名: Loop corrections to cosmological perturbations in multi-field inflationary models
作者: Gao, Xian ;  Xu, Fanrong
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2009
期号: 7, 页码:-
关键词: VACUUM POLARIZATION ;  FLUCTUATIONS ;  MASS
学科分类: Physics
通讯作者: Gao, X , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
部门归属: [Gao, X; Xu, FR] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Xu, FR] Univ Maryland, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA; [Xu, FR] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
英文摘要: We investigate one-loop quantum corrections to the power spectrum of adiabatic perturbation from entropy modes/adiabatic mode cross-interactions in multiple DBI inflationary models. We find that due to the non-canonical kinetic term in DBI models, the loop corrections are enhanced by slow-varying parameter epsilon and small sound speed c(s). Thus, in general the loop-corrections in multi-DBI models can be large. Moreover, we find that the loop-corrections from adiabatic/entropy cross-interaction vertices are IR finite.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000269971100029
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5291
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Gao, Xian,Xu, Fanrong. Loop corrections to cosmological perturbations in multi-field inflationary models[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2009(7):-.
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