140 citations · 1.4k across the 46 of their papers we have counts for
5 papers · 1 filter
Shell-crossing in a CDM Universe
Cornelius Rampf, Oliver Hahn
Perturbation theory is an indispensable tool for studying the cosmic large-scale structure, and establishing its limits is therefore of utmost importance. One crucial limitation of…
Accurate initial conditions for cosmological N-body simulations: Minimizing truncation and discreteness errors
Michaël Michaux, Oliver Hahn, Cornelius Rampf +1
Inaccuracies in the initial conditions for cosmological N-body simulations could easily be the largest source of systematic error in predicting the non-linear large-scale structure…
Higher-order initial conditions for mixed baryon-CDM simulations
Oliver Hahn, Cornelius Rampf, Cora Uhlemann
We present a novel approach to generate higher-order initial conditions (ICs) for cosmological simulations that take into account the distinct evolution of baryons and dark matter.…
Cosmological perturbations for two cold fluids in CDM
Cornelius Rampf, Cora Uhlemann, Oliver Hahn
The cosmic large-scale structure of our Universe is comprised of baryons and cold dark matter (CDM). Yet it is customary to treat these two components as a combined single-matter f…
Fast simulations of cosmic large-scale structure with massive neutrinos
Christian Partmann, Christian Fidler, Cornelius Rampf +1
Accurate cosmological simulations that include the effect of non-linear matter clustering as well as of massive neutrinos are essential for measuring the neutrino mass scale from u…