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Einstein's signature in cosmological large-scale structure

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Galaxies are biased tracers of the underlying matter distribution in our Universe. The distribution of primordial density perturbations is a key discriminant between different models for the origin of structure, and deviations from a simple Gaussian distribution can give rise to scale-dependent bias on the largest observable scales. Studying large scales close to the Hubble-horizon requires a consistent relativistic interpretation of gravitational collapse on small-scales, but standard treatments (and numerical simulations) are based on Newtonian gravity. I will show how Einstein’s general relativity gives rise to a characteristic signature in the distribution of galaxies on large-scales.

This talk is part of the Cosmology Lunch series.

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