Conformal Invariance and the Four Point Scalar Correlator in Slow-Roll Inflation

Understand

We calculate the four point correlation function for scalar perturbations in the canonical model of slow-roll inflation.

• We work in the leading slow-roll approximation where the calculation can be done in de Sitter space.
• Our calculation uses techniques drawn from the AdS/CFT correspondence to find the wave function at late times and then calculate the four point function from it.
• The answer we get agrees with an earlier result in the literature, obtained using different methods.