Austrian Early Career Conference 2024

Contribution:
Talk

Authors:
Lukas Winkler

Affiliations:
University of Vienna

Title:
Reconstructing cosmological parameters using fast N-Body simulations

Abstract:
One of the most fundamental questions in cosmology is how structure formed in our universe from primordial perturbation to the objects we can observe today. The current standard model ΛCDM is mostly consistent with this, but next generation observational efforts using instruments like JWST, Euclid, LSST and DESI will be able to test its predictions with unprecedented accuracy.
The primary tool to compare the influence of different cosmological parameters and models on structure formation are large-scale N-Body simulations. Recently fully differentiable simulations allow sampling the initial properties of the universe more efficiently. Combining this with better time integration methods that allow significantly faster simulations without sacrificing accuracy, it is now possible to reconstruct the initial properties of our universe more accurately than ever before.