Enhancing non-Gaussianities by breaking local Lorentz invariance
Enhancing non-Gaussianities by breaking local Lorentz invariance
This talk briefly explains how the breaking of a Lorentz-invariant description of nature at tiny space-time intervals might affect the non-Gaussian character of the primordial fluctuations left by inflation. For example, a model that contains irrelevant operators that only preserve the spatial symmetries along constant-time surfaces can generate a larger …