cosmological inflation

cosmological inflation


On a very large scale the universe looks
homogeneous – the same in all directions. And, this means that in an earlier stages of
the universes evolution uh… that everything must have been
in contact. These regions must have been in contact, so as to share information and
create a homogeneous universe. This is what the theory of
inflation gives you. It is an accelerated phase of
expansion when the universe was less than one second old. And it explains why the
the universe is so homogeneous today. But, even more importantly, it also explains that there were some very small
fluctuations – quantum fluctuations. These very small initial fluctuations in density that later on uh… grew, and under gravitation action became denser and denser and formed
galaxies and the other structures we observed. We are very excited about
learning about this very early phase of the universe. Because, not only can it tell us about the universe today, but
it can also tell us about particle physics and extensions to the standard model since it happened at such high energies. And that’s why we’re very exciting about learning it.

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