ITP OpenIR  > 理论物理所2014年知识产出
Cosmological observables in multi-field inflation with a non-flat field space
Gao, X; Li, TJ; Shukla, P; Gao, X (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
2014
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
期号10页码:8
摘要Using delta N formalism in the context of a generic multi-field inflation driven on a non-flat field space background, we revisit the analytic expressions of the various cosmological observables such as scalar tensor power spectra, scalar/tensor spectral tilts, non-Gaussianity parameters, tensor-to-scalar ratio, and the various runnings of these observables. In our backward formalism approach, the subsequent expressions of observables automatically include the terms beyond the leading order slow-roll expansion correcting many of the expression at subleading order. To connect our analysis properly with the earlier results, we rederive the (well) known (single field) expressions in the limiting cases of our generic formulae. Further, in the light of PLANCK results, we examine for the compatibility of the consistency relations within the slow-roll regime of a two-field roulette poly-instanton inflation realized in the context, of large volume scenarios.
部门归属[Gao, Xin ; Li, Tianjun] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China ; [Gao, Xin ; Li, Tianjun] Chinese Acad Sci, Kavli Inst Theoret Phys China, Inst Theoret Phys, Beijing 100190, Peoples R China ; [Gao, Xin] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA ; [Li, Tianjun] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China ; [Shukla, Pramod] Univ Turin, Dipartimento Fis, I-10125 Turin, Italy ; [Shukla, Pramod] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
关键词Multicomponent Inflaton Scalar Ratio Spectrum Universe 2nd-order Scenario Flatness Formula Horizon Models
学科领域Physics
资助者Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088]
DOI10.1088/1475-7516/2014/10/008
URL查看原文
收录类别SCI
语种英语
资助者Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [201003833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Ca113-2012-0088]
WOS记录号WOS:000345990800009
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15628
专题理论物理所2014年知识产出
通讯作者Gao, X (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
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GB/T 7714
Gao, X,Li, TJ,Shukla, P,et al. Cosmological observables in multi-field inflation with a non-flat field space[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014(10):8.
APA Gao, X,Li, TJ,Shukla, P,&Gao, X .(2014).Cosmological observables in multi-field inflation with a non-flat field space.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(10),8.
MLA Gao, X,et al."Cosmological observables in multi-field inflation with a non-flat field space".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .10(2014):8.
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