Primordial Non-Gaussianity
  Our current understanding of the Universe is established through the pristine
measurements of structure in the cosmic microwave background (CMB) and the
distribution and shapes of galaxies tracing the large scale structure (LSS) of
the Universe. One key ingredient that underlies cosmological observables is
that the field that sources the observed structure is assumed to be initially
Gaussian with high precision. Nevertheless, a minimal deviation from
Gaussianityis perhaps the most robust theoretical prediction of models that
explain the observed Universe; itis necessarily present even in the simplest
scenarios. In addition, most inflationary models produce far higher levels of
non-Gaussianity. Since non-Gaussianity directly probes the dynamics in the
early Universe, a detection would present a monumental discovery in cosmology,
providing clues about physics at energy scales as high as the GUT scale.
