A possible dynamical effect of a primordial magnetic field

The possible existence of a primordial magnetic field in the universe has been investigated in many articles. Studies involving the influence of a magnetic field in the nucleosynthetic era, as well as studies of the effects on the formation of structures during the radiation era and the matter era, have been considered. Here we assume the existence of a primordial magnetic field and study its effect, in particular, on the formation of voids. The aim of the study is twofold: to place constraints on the strength of the magnetic field during the recombination era and to preview its effects on the formation of voids.