论文标题

曲面原始功率光谱的分析近似

Analytical approximations for curved primordial power spectra

论文作者

Thavanesan, Ayngaran, Werth, Denis, Handley, Will

论文摘要

我们扩展了Contaldi等人的工作。并得出由通货膨胀模型引起的原始功率光谱的分析近似,包括原始空间曲率。这些分析模板与任何特定的通货膨胀潜力无关,因此说明并提供了对原始曲率的通用效应和预测的见解,表现为低多物下的截止和振荡,并同意数值计算。我们通过分析近似确定曲率的效果可以在数学上归因于波动的移动动态参与。

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.

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