The DESI <i>N</i>-body simulation project โ I. Testing the robustness of simulations for the DESI dark time survey
The DESI <i>N</i>-body simulation project โ I. Testing the robustness of simulations for the DESI dark time survey
Analysis of large galaxy surveys requires confidence in the robustness of numerical simulation methods. The simulations are used to construct mock galaxy catalogs to validate data analysis pipelines and identify potential systematics. We compare three $N$-body simulation codes, ABACUS, GADGET, and SWIFT, to investigate the regimes in which their results โฆ