The hybrid curvaton
  We study both oscillating and inflating curvaton scenarios when the curvaton mechanism is caused by a hybrid potential. The source of the curvature perturbation is the inhomogeneous phase transition that causes the modulation of the onset of the oscillation. For the supergravity-motivated curvaton there is a possibility of finding natural coincidence of the energy density that is needed to affect non-Gaussianity in the curvaton scenario. 
Konstantinos Dimopoulos, Kazunori Kohri and Tomohiro Matsuda
hep-ph astro-ph.CO hep-th