Gravitational Waves in Quintessential Inflation

Details Gravitational Waves in Quintessential Inflation Gravitational Waves in Quintessential Inflation

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....5.3033t&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

Quintessential inflation explains both inflation and present accelerated expansion. In this model these two accelerated expansion is driven by a single scalar field. We construct a model based on an exponential potential. We consider two kinds of reheating process. One is the ordinary reheating in quintessential inflation, using gravitational particle creation. The other is the instant preheating which is much more effective. We calculate the relic gravitational waves produced during inflation in our model. We find that the spectrum of the gravitational waves is quite sensitive to the reheating process. Conversely, the detection or non-detection of primordial gravitational waves at ˜100MHz would have profound implications for the inflationary cosmology.

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