The exact spectrum of scalar field perturbations in a radiation deformed closed de Sitter universe

被引：4

作者：

Sarangi, Sash ^{[1
]}

Schalm, Koenraad

Shiu, Gary

van der Schaar, Jan Pieter

机构：

[1] Columbia Univ, Dept Phys, Inst Strings Cosmol & Astropart Phys, New York, NY 10027 USA

[2] Univ Amsterdam, Inst Theoret Phys, NL-1018 XE Amsterdam, Netherlands

[3] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2007年 / 03期

关键词：

string theory and cosmology; inflation; quantum gravity; phenomenology; quantum field theory on curved space;

D O I：

10.1088/1475-7516/2007/03/002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We observe that the equation of motion for a free scalar field in a closed universe with radiation and a positive cosmological constant is given by Lame's equation. Computing the exact power spectrum of scalar field perturbations, the presence of both curvature and radiation produces a red tilt weakly dependent on the amount of radiation.

引用

页数：16

共 31 条

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