Density fluctuations in Brans-Dicke inflation
广义相对论与量子宇宙学
2016-08-31 v1 天体物理学
摘要
Spectrum of density perturbations in the Universe generated from quantum-gravitational fluctuations in slow-roll-over inflationary scenarios with the Brans-Dicke gravity is calculated. It is shown that after inflation the isocurvature mode of perturbations may be neglected as compared to the adiabatic mode, and that an amplitude of the latter mode is not significantly different from that in the Einstein gravity. However, the account of the isocurvature mode is necessary to obtain the quantitatively correct spectrum of adiabatic perturbations.
引用
@article{arxiv.gr-qc/9502002,
title = {Density fluctuations in Brans-Dicke inflation},
author = {Alexei A. Starobinsky and Jun'ichi Yokoyama},
journal= {arXiv preprint arXiv:gr-qc/9502002},
year = {2016}
}
备注
13 pages RevTeX file