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Hybrid curvaton

Konstantinos Dimopoulos

Kazunori Kohri

Tomohiro Matsuda

  • Consortium for Fundamental Physics, Physics Department, Lancaster University, Lancaster LA1 4YB, United Kingdom

  • Cosmophysics Group, Theory Center, IPNS, KEK, and The Graduate University for Advanced Study (Sokendai), Tsukuba 305-0801, Japan

  • Physics Department, Lancaster University, Lancaster LA1 4YB, United Kingdom, and Laboratory of Physics, Saitama Institute of Technology, Fukaya, Saitama 369-0293, Japan

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Phys. Rev. D 85, 123541 – Published 26 June, 2012

DOI: https://doi.org/10.1103/PhysRevD.85.123541

Abstract

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.

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Phys. Rev. D 85, 123541– Published 26 June, 2012
  • Received 4 April 2012

© 2012 American Physical Society

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