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Cosmological perturbation theory and application to the LSS

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If you have a question about this talk, please contact Sunny Vagnozzi .

Cosmological perturbation theory plays an important role in understanding the formation of large scale structure (LSS) of the Universe. On a fairly large-scales (long-wavelengths), the cosmological fluctuations can be treated perturbatively using the fluid description. EFT methods allow us to integrate out the nonlinear, small-scale, modes where the physics gets increasingly complex (dark matter halo dynamics, galaxy formation, baryonic physics, etc.). In the talk, I shall give an overview of some of the current developments and status of the field. We will conclude by showing the performance and parameter constraints in light of upcoming galaxy surveys and I will indicate some future directions.

This talk is part of the Cosmology Lunch series.

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