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arXiv · 1003.4112

Gravitational wave generation in hybrid quintessential inflationary models

Paulo M. Sá·Alfredo B. Henriques
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Abstract

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 $Ω_Ω_{GW}$.

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Paulo M. Sá, Alfredo B. Henriques. 2010-07-26. Gravitational wave generation in hybrid quintessential inflationary models. https://doi.org/10.1103/physrevd.81.124043

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