Details

Autor(en) / Beteiligte

• García-Bellido, Juan
• Figueroa, Daniel G

Titel

Stochastic background of gravitational waves from hybrid preheating

Ist Teil von

• Physical review letters, 2007-02, Vol.98 (6), p.061302-061302, Article 061302

Ort / Verlag

United States

Erscheinungsjahr

2007

Quelle

American Physical Society

Beschreibungen/Notizen

• The process of reheating the Universe after hybrid inflation is extremely violent. It proceeds through the nucleation and subsequent collision of large concentrations of energy density in bubblelike structures, which generate a significant fraction of energy in the form of gravitational waves. We study the power spectrum of the stochastic background of gravitational waves produced at reheating after hybrid inflation. We find that the amplitude could be significant for high-scale models, although the typical frequencies are well beyond what could be reached by planned gravitational wave observatories. On the other hand, low-scale models could still produce a detectable stochastic background at frequencies accessible to those detectors. The discovery of such a background would open a new window into the very early Universe.