Density perturbations in multifield inflationary models

被引：58

作者：

Mukhanov, VF

Steinhardt, PJ

机构：

[1] Univ Munich, Sekt Phys, D-80333 Munich, Germany

[2] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

PHYSICS LETTERS B | 1998年 / 422卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(98)00032-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive a closed-form, analytical expression for the spectrum of long-wavelength density perturbations in inflationary models with mio (or more) inflaton degrees of freedom that is valid in the slow-roll approximation. We illustrate several classes of potentials for which this expression reduces iv a simple. algebraic expression. (C) 1998 Elsevier Science B.V.

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页码：52 / 60

页数：9

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