Hybrid Curvatons from Broken Symmetry

摘要: We present a new general mechanism for generating curvature perturbations after inflation. Our model is based on the simple assumption that field starts to oscillate inflation has potential characterized by an underlying global symmetry slightly or badly broken. Inhomogeneous preheating occurs due oscillation with broken symmetry. Unlike traditional curvaton model, we will not identify oscillating field. The identified preheat could be either scalar, vector, fermionic introduce explicit mass term curvaton, which important later evolution and decay. represents simplest example of hybrid curvatons inhomogeneous preheating.