4.4 “End of Inflation” Mechanism 92 curve, is allowed within an order of magnitude below m$_{0}$ ∼ 10 3 GeV. The values of f$_{NL}$ and g$_{NL}$ for a thermal waterfall field mass of m$_{0}$ ∼ 10 3 GeV are shown in Table 4.4, with them both being within current observational bounds [55]. Fig. 4.8: Prediction of the model for the non-Gaussianity parameter f$_{NL}$ , with α = 1 , Γ$_{ϕ}$ ≪ H$_{T I}$ and h and $^{H}$∗ values from Table 4.2. (A plot of Eq. (4.71), with ψ = $^{ψ}$∗ .) The Blue and Red lines are the central value and upper bound of f$_{NL}$ respectively as obtained by the Planck spacecraft [55], with the lower bound being outside the displayed range of f$_{NL}$ . 10 2 10 3 10 $_{4}$m 0 ( GeV ) 10 - 2 10 - 1 10 0 10 1 f NL Table 4.4: Prediction for non-Gaussianity parameters of the model, with α =1 , Γ$_{ϕ}$ ≪ H$_{TI}$ , m$_{0}$ ∼ 10 3 GeV and h and $^{H}$∗ values from Table 4.2. Parameter Order of Magnitude Value f$_{NL}$ 10 − 1 g$_{NL}$ 10 − 2 We provide results for the spectral index and its running when the period of n$_{s}$ and n ′ $_{s}$: Chaotic Inflation