Non-Gaussianity from false vacuum inflation: Old curvaton scenario

Jinn Ouk Gong, Chunshan Lin, Yi Wang

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11 Scopus citations


We calculate the three-point correlation function of the comoving curvature perturbation generated during an inflationary epoch driven by false vacuum energy. We get a novel false vacuum shape bispectrum, which peaks in the equilateral limit. Using this result, we propose a scenario which we call ''old curvaton''. The shape of the resulting bispectrum lies between the local and the false vacuum shapes. In addition we have a large running of the spectral index.

Original languageEnglish
Article number004
JournalJournal of Cosmology and Astroparticle Physics
Issue number3
StatePublished - 2010


  • Cosmological perturba-tion theory
  • Inflation
  • Non-gaussianity
  • Physics of the early universe


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