Non-Gaussianity and Statistical Anisotropy from Vector Field Populated Inflationary Models

Figure 4

Plots of the isotropic functions appearing in the vector fields trispectrum (from (55)): 𝑐.𝑖. is the contribution from contact-interaction diagrams, 𝑣.𝑒.(𝐼), 𝑣.𝑒.(𝐼𝐼), and 𝑣.𝑒.(𝐼𝐼𝐼) are the contributions from the vector-exchange diagrams. The equilateral configuration has been considered in this figure.

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