Effect of reheating on predictions following multiple-field inflation

Effect of reheating on predictions following multiple-field inflation
复制标题

再加热对多场膨胀后预测的影响

DOI:
--
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
E. Tarrant
E. Tarrant
中科院分区:
--
文献类型:
--
作者:
Selim C. Hotinli;J. Frazer;A. Jaffe;Joel Meyers;Layne Price;E. Tarrant

文献摘要

参考文献

被引文献

相似文献

我们研究了宇宙学可观量对许多标量场驱动的膨胀后的再加热阶段的敏感性。我们描述了一种方法,它允许使用突然衰变近似来半解析地处理微扰再加热对宇宙学扰动的影响。聚焦于数学上的{N}二次膨胀,我们展示了标量谱指数和张量与标量比如何受标量场衰变为辐射的速率的影响。我们发现,对于衰变率的某些选择,多场膨胀后的再加热会对宇宙学可观测值的预测产生重大影响。
We study the sensitivity of cosmological observables to the reheating phase following inflation driven by many scalar fields. We describe a method which allows semianalytic treatment of the impact of perturbative reheating on cosmological perturbations using the sudden decay approximation. Focusing on $\mathcal{N}$-quadratic inflation, we show how the scalar spectral index and tensor-to-scalar ratio are affected by the rates at which the scalar fields decay into radiation. We find that for certain choices of decay rates, reheating following multiple-field inflation can have a significant impact on the prediction of cosmological observables.
DOI: 10.1088/1475-7516/2016/08/042
发表时间: 2016
影响因子: 6.4
作者:
Hardwick R
通讯作者: Hardwick R
两个曲线衰减的原始非高斯性
DOI: 10.1103/physrevd.76.103003
发表时间: 2007
期刊: Physical Review D
影响因子: 5
作者:
Assadullahi H
通讯作者: Assadullahi H
通货膨胀多领域模型的预测
DOI: 10.1088/1475-7516/2014/01/028
发表时间: 2014
影响因子: 6.4
作者:
Frazer J
通讯作者: Frazer J