Primordial Non-Gaussianity in the Large-Scale Structure of the Universe

Figure 2

Non-Gaussian fractional correction 𝛽_𝛿(𝑘,𝑧)=Δ𝑃^NG_𝛿(𝑘,𝑧)/𝑃^G_𝛿(𝑘,𝑧) to the matter power spectrum that originates from primordial non-Gaussianity of the local type. Results are shown at redshift 𝑧=0, 0.5, 1, and 2 for 𝑓^loc_NL=+100 (filled symbols) and 𝑓^loc_NL=−100 (empty symbols). The solid curves indicate the prediction from a 1-loop perturbative expansion.