  We work out the Standard Model (SM) mass spectrum during inflation with
quantum corrections, and explore its observable consequences in the squeezed
limit of non-Gaussianity. Both non-Higgs and Higgs inflation models are studied
in detail. We also illustrate how some inflationary loop diagrams can be
computed neatly by Wick-rotating the inflation background to Euclidean
signature and by dimensional regularization.
