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- W2153650242 abstract "We study adiabatic and isocurvature perturbation spectra produced by a period of cosmological inflation driven by two scalar fields. We show that there exists a model-independent consistency condition for all two-field models of slow-roll inflation, despite allowing for model-dependent linear processing of curvature and isocurvature perturbations during and after inflation on super-horizon scales. The scale dependence of all spectra are determined solely in terms of slow-roll parameters during inflation and the dimensionless cross-correlation between curvature and isocurvature perturbations. We present additional model-dependent consistency relations that may be derived in specific two-field models, such as the curvaton scenario." @default.
- W2153650242 created "2016-06-24" @default.
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- W2153650242 date "2002-08-19" @default.
- W2153650242 modified "2023-10-12" @default.
- W2153650242 title "Observational test of two-field inflation" @default.
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- W2153650242 doi "https://doi.org/10.1103/physrevd.66.043520" @default.
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