Quantum Fields and the Big Bang

We can trace fluctuations for 14 billion years from the very earliest stages of the universe. The statistical distribution of galaxies through the universe also holds a memory of these fluctuations that much we know is true, but that perhaps we might get more information from there. So it's an as astonishing story that we can take a photograph of these fluctuations. But there's also a level of disappointment here as well. They 're just those that you would get from free fields. And it would be nice if we could see some non galcianity which would be telling us about the interactions between the fields back in the very early universe.