WallGo investigates: Theoretical uncertainties in the bubble wall velocity

This record contains the datasets accompanying the publication“Theoretical uncertainties in the bubble wall velocity” (WallGo Collaboration). The data were generated using the WallGo software framework and are used to quantify theoretical uncertainties in state-of-the-art calculations of the bubble wall velocity during first-order cosmological phase transitions. They include numerical results for two extensions of the Standard Mode (SM), the inert doublet model (IDM) and the singlet exteded SM, covering variations in: • the set of particles taken out of equilibrium, • logarithmically and power-enhanced collision integrals, • thermal mass treatments, • nucleation temperatures, • parametrizations of the bubble wall profile (tanh ansatz), and • the perturbative order of the effective potential. Together, these datasets enable the detailed uncertainty budget presented in the associated publication and provide reference results for benchmarking wall velocity and gravitational wave predictions. Whenever applicable, the data files are organized by figure number, model, parameter point, and source of uncertainty e.g. `Fig2Right_IDM_BM1_OutOfEq`.The metadata in the respective files describes the simulation setup, input parameters, and the version of WallGo used for each dataset.