Stochastic Background of Gravitational Waves from Hybrid Preheating
Stochastic Background of Gravitational Waves from Hybrid Preheating
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 …