Primordial Non-Gaussianity in the Cosmic Microwave Background

Figure 4

Plot of the function 𝐹(1,𝑥₂,𝑥₃)𝑥²₂𝑥²₃ for the Slow-Roll inflation as given by (20) (a) and the local distribution as given by (18) (b). The figures are normalized to have value 1 for equilateral configurations 𝑥₂=𝑥₃=1 and set to zero outside the region 1−𝑥₂≤𝑥₃≤𝑥₂. Here 𝑥₃≡𝑘₃/𝑘₁, 𝑥₂≡𝑘₂/𝑘₁, and 𝜖=𝜂=1/30. The figures are taken from Babich et al. 2004 [86].

(a)

(b)