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Guo, ZK
Large number limit of multifield inflation
发表期刊PHYSICAL REVIEW D
语种英语
关键词FLUX COMPACTIFICATIONS
摘要We compute the tensor and scalar spectral index n(t), n(s), the tensor-to-scalar ratio r, and the consistency relation n(t)/r in the general monomial multifield slow-roll inflation models with potentials V similar to Sigma(i)lambda(i)vertical bar phi(i)vertical bar(Pi). The general models give a novel relation that nt, ns and n(t)/r are all proportional to the logarithm of the number of fields N-f when N-f is getting extremely large with the order of magnitude around O(10(40)) thorn. An upper bound N-f less than or similar to N*e(ZN)* is given by requiring the slow variation parameter small enough where N-* is the e-folding number and Z is a function of distributions of lambda(i) and rho(i). Besides, n(t)/r differs from the single-field result - 1/8 with substantial probability except for a few very special cases. Finally, we derive theoretical boundsr r > 2/N-* (r greater than or similar to 0.03) and for nt, which can be tested by observation in the near future.
2017
ISSN2470-0010
卷号96期号:12页码:123521
学科领域Astronomy & Astrophysics ; Physics
学科门类Astronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1103/PhysRevD.96.123521
收录类别SCIE
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/23012
专题理论物理所科研产出_SCI论文
作者单位1.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
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Guo, ZK. Large number limit of multifield inflation[J]. PHYSICAL REVIEW D,2017,96(12):123521.
APA Guo, ZK.(2017).Large number limit of multifield inflation.PHYSICAL REVIEW D,96(12),123521.
MLA Guo, ZK."Large number limit of multifield inflation".PHYSICAL REVIEW D 96.12(2017):123521.
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