Non-Gaussianities in single field inflation and their optimal limits from the WMAP 5-year data
Non-Gaussianities in single field inflation and their optimal limits from the WMAP 5-year data
Using the recently developed effective field theory of inflation, we argue that the size and the shape of the non-Gaussianities generated by single-field inflation are generically well described by two parameters: f_NL^equil, which characterizes the size of the signal that is peaked on equilateral configurations, and f_NL^orthog, which instead characterizes …