In physical cosmology, the fluctuations of the cosmic microwave background are known to be approximately Gaussian, both theoretically as well as experimentally. However, most theories predict some level of non-Gaussianity in the primordial density field. Detection of these non-Gaussian signatures will allow discrimination between various models of inflation and their alternatives.
- "Big Bang Secrets Swirling in a Fluid Universe". Scientific American. Retrieved 2015-12-22.
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