arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0805.2154astro-phhep-phhep-th
收藏

原初黑洞、永恒暴胀和WMAP5之后的暴胀参数空间

Primordial Black Holes, Eternal Inflation, and the Inflationary Parameter Space after WMAP5

Hiranya V. Peiris, Richard Easther

摘要:

我们认为通货膨胀的约束驱动的一个单一的,最低限度的耦合标量场的光的WMAP 5数据集,以及ACBAR和超新星遗产调查。我们使用慢滚重建算法,以获得最佳的通货膨胀的参数空间的约束。WMAP5允许的标量谱的斜率的尺度依赖性足够大,以导致可行的模型,其中小尺度扰动外推到膨胀结束时具有相当大的幅度。我们发现,排除参数值,这将导致生产过剩的原始黑洞,甚至开始永恒的通货膨胀导致潜在的显着限制慢滚参数。最后,我们提出了一个更复杂的方法,包括先验的基础上的总持续时间的通货膨胀,并讨论了由此产生的限制通货膨胀的参数空间。

英文摘要:

We consider constraints on inflation driven by a single, minimally coupled scalar field in the light of the WMAP5 dataset, as well as ACBAR and the SuperNova Legacy Survey. We use the Slow Roll Reconstruction algorithm to derive optimal constraints on the inflationary parameter space. The scale dependence in the slope of the scalar spectrum permitted by WMAP5 is large enough to lead to viable models where the small scale perturbations have a substantial amplitude when extrapolated to the end of inflation. We find that excluding parameter values which would cause the overproduction of primordial black holes or even the onset of eternal inflation leads to potentially significant constraints on the slow roll parameters. Finally, we present a more sophisticated approach to including priors based on the total duration of inflation, and discuss the resulting restrictions on the inflationary parameter space.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑