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Huang, Qing-Guo; Huang, QG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
Scale dependence of f(NL) in N-flation
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
KeywordInflation Perturbations
AbstractAdopting the horizon-crossing approximation, we derive the spectral index of f(NL) in general N-flation model. Axion N-flation model is taken as a typical model for generating a large f(NL) which characterizes the size of local form bispectrum. We find that its tilt nf(NL) is negligibly small when all inflatons have the same potential, but a negative detectable nf(NL) can be achieved in the axion N-flation with different decay constants for different inflatons. The measurement of nf(NL) can be used to support or falsify the axion N-flation in the near future.
2010
ISSN1475-7516
Issue12Pages:-
Subject AreaPhysics
Indexed BySCI
Funding OrganizationChinese Academy of Science; NSFC ; Chinese Academy of Science; NSFC ; Chinese Academy of Science; NSFC ; Chinese Academy of Science; NSFC
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/4997
Collection理论物理所科研产出_SCI论文
Corresponding AuthorHuang, QG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Huang, Qing-Guo,Huang, QG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China. Scale dependence of f(NL) in N-flation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2010(12):-.
APA Huang, Qing-Guo,&Huang, QG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.(2010).Scale dependence of f(NL) in N-flation.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(12),-.
MLA Huang, Qing-Guo,et al."Scale dependence of f(NL) in N-flation".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .12(2010):-.
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