arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.05573astro-ph.COgr-qc
收藏

弯曲原始功率谱的解析近似

Analytical approximations for curved primordial power spectra

Ayngaran Thavanesan, Denis Werth, Will Handley

摘要:

我们扩展了Contaldi等人的工作,并推导出包含原始空间曲率的暴胀模型所产生的原始功率谱的解析近似。这些分析模板是独立于任何特定的通货膨胀潜力,因此说明和提供洞察的一般影响和预测的原始曲率,表现为截止和振荡在低多极和同意数值计算。我们确定通过我们的分析近似,曲率的影响可以在数学上归因于参与动态的波矢量的变化。

英文摘要:

We extend the work of Contaldi et al. and derive analytical approximations for primordial power spectra arising from models of inflation which include primordial spatial curvature. These analytical templates are independent of any specific inflationary potential and therefore illustrate and provide insight into the generic effects and predictions of primordial curvature, manifesting as cut-offs and oscillations at low multipoles and agreeing with numerical calculations. We identify through our analytical approximation that the effects of curvature can be mathematically attributed to shifts in the wavevectors participating dynamically.

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。

↑