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The story of a simple universe

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If you have a question about this talk, please contact Francesca Chadha-Day.

The solution of the laws of nature known as “the universe” displays an astonishing simplicity. The story of everything we have ever observed on cosmological distances, from atoms to light, from Dark forms of energy to spacetime itself, can be reduced in a precise and predictive way to a single function of space: the primordial perturbation. At the quantum mechanical level, this perturbation is the initial wave function of the universe and appears to be described by simply two numbers. After critically reviewing how inflation attempts to accounts for this remarkable fact, I will present new predictions that will challenge or confirm our current standard cosmological model in the next generations of cosmological observations. In particular, I will discuss cosmological soft theorems, the related adiabatic modes and the emergence of a new hierarchy in physics.

This talk is part of the Theoretical Physics Colloquium series.

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