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- W2075824521 abstract "Inflation is studied in the context of induced gravity (IG) $gamma sigma^2 R$, where $R$ is the Ricci scalar, $sigma$ a scalar field and $gamma$ a dimensionless constant. We study in detail cosmological perturbations in IG and examine both a Landau-Ginzburg (LG) and a Coleman-Weinberg (CW) potential toy models for small field and large field (chaotic) inflation and find that small field inflationary models in IG are constrained to $gamma lesssim 3 times 10^{-3}$ by WMAP 5 yrs data. Finally we describe the regime of coherent oscillations in induced gravity by an analytic approximation, showing how the homogeneous inflaton can decay in its short-scale fluctuations when it oscillates around a non-zero value $sigma_0$." @default.
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- W2075824521 date "2009-11-01" @default.
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- W2075824521 title "Inflation and reheating in induced gravity" @default.
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- W2075824521 doi "https://doi.org/10.1016/j.physletb.2009.10.066" @default.
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