Oliver Hahn

Oliver Hahn is a Professor at ETH Zurich, affiliated with the Faculty of Earth Sciences, Geography and Astronomy and the Department of Astrophysics. His research focuses on cosmology, astrophysics, and computational methods for large-scale structure simulations.

• 2025: BullFrog (cosmological time integrators), cosmICweb (zoom-in initial conditions)
• 2024: DISCO-DJ/EB (Einstein-Boltzmann solvers), Stochastic Super-resolution (diffusion models)

Research interests span cosmological numerical methods, dark matter dynamics, perturbation theory, galaxy cluster physics, and applications of deep learning to astrophysical simulations. Recent work emphasizes non-Gaussianity in primordial conditions, relativistic effects on cosmic structures, and differentiable cosmological frameworks.

2023–2025 publications highlight advancements in N-body simulations, hydrodynamical galaxy formation, and uncertainty quantification through denoising diffusion models. Key themes include the interplay between baryonic and dark matter, tidal effects in structure formation, and computational tools for cosmological research.