单场暴胀模型中视界穿越附近的大曲率扰动
天体物理学
2009-02-20 v3
摘要
我们考虑了在相对较小尺度上预测曲率扰动功率谱大振幅的单场暴胀模型实例。结果表明,在具有双阱型暴胀势的模型中,如果适当选择势的参数,功率谱中的峰值可能存在,其最大振幅约为 0.1。结果还表明,如果在宇宙学尺度上存在正的运行 n' 且约为 0.005,则在具有运行质量势的模型中,大 k 值处预测了相同量级的谱振幅。给出了具有运行质量势的模型中暴胀期间量子扩散效应的估计。
引用
@article{arxiv.0806.4541,
title = {Large curvature perturbations near horizon crossing in single-field inflation models},
author = {Edgar Bugaev and Peter Klimai},
journal= {arXiv preprint arXiv:0806.4541},
year = {2009}
}
备注
10 pages, 12 figures. In v3, minor modifications were made to match version accepted by Phys. Rev. D: length of the introduction reduced, several references added