Gravitational wave generation in power-law inflationary models

Abstract

We investigate the generation of gravitational waves in power-law inflationary models. The energy spectrum of the gravitational waves is calculated using the method of continuous Bogoliubov coefficients. We show that, by looking at the interval of frequencies between 10^(-5) and 10^5 Hz and also at the GHz range, important information can be obtained, both about the inflationary period itself and about the thermalization regime between the end of inflation and the beginning of the radiation-dominated era. We thus deem the development of gravitational wave detectors, covering the MHz/GHz range of frequencies, to be an important task for the future.

8 pages, 6 figures, added 3 references, text improved

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• Gravitational wave generation in hybrid quintessential inflationary models
• Gravitational wave generation in power-law inflationary models
• Gravitational wave generation in loop quantum cosmology
• Gravitational waves from two scalar fields unifying the dark sector with inflation
• Constraints on single entity driven inflationary and radition eras
• Gravitational waves from warm inflation in the weak dissipative regime