Zoomed high-resolution simulations of Multi-coupled Dark Energy: cored galaxy density profiles at high redshift

Understand

We perform for the first time high-resolution zoom-in re-simulations of individual halos in the context of the Multi-coupled Dark Energy (McDE) scenario, which is characterised by the existence of two distinct dark matter particle species with opposite couplings to a Dark Energy scalar field.

• We compare the structural properties of the simulated halos to the standard Lambda-CDM results.
• The zoomed-in initial conditions are set up using a specifically designed code called ZInCo that we publicly release along with the present paper.
• Our numerical results allow to investigate in detail and with unprecedented resolution the halo segregation process that characterises McDE cosmologies from its very early stages.