General Relativity in Cosmological Simulations

by Julian Adamek

Wednesday 18 Dec 2024, 11:30 → 12:30 Europe/Zurich

4/2-011 - TH common room (CERN)

Cosmological surveys are probing extremely large volumes at ever increasing precision. The dramatic improvement in statistical errors allows us to detect even very subtle effects in the large-scale distribution of matter, and to thoroughly test our theory of gravity on cosmological distance scales. I will present a numerical framework for cosmological N-body simulations that offers a consistent treatment of the dynamics of spacetime as described by the full set of Einstein's equations. Such a framework can be used to compute higher-order correlations in a relativistic setting, or to predict the gravitational dynamics of exotic models that do not offer a simple Newtonian description.