Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure

Figure 17

(a), (b) Equilateral configurations of the matter bispectrum measured in N-body simulations with Gaussian initial conditions (data points) and tree-level (dashed lines) and one-loop (continuous lines) predictions in perturbation theory. (b) shows the ratio to the tree-level prediction with acoustic oscillations removed. (c), (d) Ratio (c) and difference (d) between the matter bispectrum measured in realizations with local non-Gaussian initial conditions () and the Gaussian case, compared with PT predictions, from [172].

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