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Inflating curvaton can create curvature perturbation when the curvaton density is slowly varying.
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2006
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F. Bernardeau and J. -P. Uzan, “NonGaussianity in multifield inflation,” Phys. Rev. D 66
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M. Sasaki, J. Valiviita and D. Wands, “Non-Gaussianity of the primordial perturbation in the curvaton model,” Phys. Rev. D 74
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2007
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2009
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2009
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T. Matsuda, “Entropy production and curvature perturbation from dissipative curvatons,” JCAP 1009
2009
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M. Kawasaki, K. Nakayama and F. Takahashi, “Hilltop Non-Gaussianity,” JCAP 0901
2011
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2011
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K. Enqvist, R. N. Lerner and O. Taanila, “Curvaton model completed,” JCAP 1112
2011
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