arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.4112gr-qcastro-ph.CO
收藏

混合经典暴胀模型中的引力波产生

Gravitational wave generation in hybrid quintessential inflationary models

Paulo M. Sá, Alfredo B. Henriques

摘要:

研究了混合经典暴胀模型中引力波的产生。用连续Bogoliubov系数方法计算了引力波的全谱。后暴胀期是典型暴胀模型的特征,它在频谱上留下了一个清晰的特征,即在高频处有一个峰值。峰值的最大值牢固地位于频谱的MHz-GHz区域并且对应于$Ω_{GW} \simeq 10^{-12}$。这个峰值比原始经典暴胀模型的引力波能谱中出现的峰值要小得多,因此避免了与$Ω_Ω_{GW}$上的核合成约束的任何冲突。

英文摘要:

We investigate the generation of gravitational waves in the hybrid quintessential inflationary model. The full gravitational-wave energy spectrum is calculated using the method of continuous Bogoliubov coefficients. The post-inflationary kination period, characteristic of quintessential inflationary models, leaves a clear signature on the spectrum, namely, a peak at high frequencies. The maximum of the peak is firmly located at the MHz-GHz region of the spectrum and corresponds to $Ω_{GW} \simeq 10^{-12}$. This peak is substantially smaller than the one appearing in the gravitational-wave energy spectrum of the original quintessential inflationary model, therefore avoiding any conflict with the nucleosynthesis constraint on $Ω_Ω_{GW}$.

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。

↑