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Inflation and conformal symmetry

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If you have a question about this talk, please contact Tommaso Giannantonio.

Inflationary spacetimes can be approximated by de Sitter space, which enjoys as many isometries as Minkowski space. These isometries are related to the conformal group in a simple fashion. I will show how the assumption of a quasi-de Sitter universe during inflation can constrain certain observables, like non-Gaussianities and so called consistency conditions between tensor and scalar power spectra. The constraints arise from the (weakly broken) conformal symmetry of the wavefunction of the Universe.

This talk is part of the Cosmology Lunch series.

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