Gravitational wave generation in hybrid quintessential inflationary models

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 ${\Omega }_{GW}\simeq 10^{-12}$. 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 $Ω_Ω_{GW}$.

10 pages, 11 figures, one reference added

References in corpus (13)

• An Upper Limit on the Stochastic Gravitational-Wave Background of Cosmological Origin
• Upper bounds on the low-frequency stochastic gravitational wave background from pulsar timing observations: current limits and future prospects
• Direct detection of the inflationary gravitational wave background
• Relic Gravity Waves from Braneworld Inflation
• Precision calculations of the gravitational wave background spectrum from inflation
• Reheating After Quintessential Inflation and Gravitational Waves
• Search for a stochastic background of 100-MHz gravitational waves with laser interferometers
• A detector of small harmonic displacements based on two coupled microwave cavities
• Hybrid Quintessential Inflation
• The Stochastic Gravitational-Wave Background and the Inflation to Radiation Transition in the Early Universe
• Unification of inflation, dark energy, and dark matter within the Salam-Sezgin cosmological model
• Parametric Resonance and Cosmological Gravitational Waves
• Gravitational wave generation in power-law inflationary models

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• Initial Condition of Relic Gravitational Waves Constrained by LIGO S6 and Multiple Interferometers
• Gravitational waves from warm inflation in the weak dissipative regime