Quasi-single field inflation with large mass

被引：137

作者：

Chen, Xingang ^{[1
]}

Wang, Yi ^{[2
]}

机构：

[1] Univ Cambridge, Ctr Theoret Cosmol, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2012年 / 09期

关键词：

inflation; cosmological perturbation theory;

D O I：

10.1088/1475-7516/2012/09/021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the effect of massive isocurvaton on density perturbations in quasi-single field inflation models, when the mass of the isocurvaton M becomes larger than the order of the Hubble parameter H. We analytically compute the correction to the power spectrum, leading order in coupling but exact for all values of mass. This verifies the previous numerical results for the range 0 < M < 3H/2 and shows that, in the large mass limit, the correction is of order H-2/M-2.

引用

页数：16

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