Adiabatic and isocurvature perturbations from inflation: Power spectra and consistency relations

被引:113
作者
Bartolo, N
Matarrese, S
Riotto, A
机构
[1] Dipartimento Fis G Galilei, I-35131 Padua, Italy
[2] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
关键词
D O I
10.1103/PhysRevD.64.123504
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We study adiabatic and isocurvature perturbations produced during a period of cosmological inflation. We compute the power spectra and cross spectra of the curvature and isocurvature modes, as well as the tensor perturbation spectrum in terms of the slow-roll parameters. We provide two consistency relations for the amplitudes and spectral indices of the corresponding power spectra. These relations represent a definite prediction and a test of inflationary models which should be adopted when studying cosmological perturbations through the cosmic microwave background in forthcoming satellite experiments.
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页数:10
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