Correlating correlation functions of primordial perturbations
  We explore the correlations between correlation functions of the primordial
curvature perturbation produced during inflation. We find that for general
single field inflation, other than the source terms which depend on the model
details, higher order correlation functions are characterized by the power
spectrum, its spectral index and running. The correlation between the
bispectrum and power spectrum is presented as an explicit example of our
systematic approach.
