Description
In this talk, I will first review the derivation of the unitarity bound in a single-field inflationary model with small and rapid oscillatory potential. I will show that this revised unitarity cutoff is somewhat higher than the naïve cutoff, 4 \pi f. Using this new cutoff, in contrast to the standard scenario where most of the observable information is encoded in the power spectrum, in this regime the oscillatory signal predominantly appears in higher-order correlation functions with large n. Finally, I will identify a phenomenologically relevant window in which n-point functions with 3 < n < 9 are potentially observable.