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 influenc e of a magnetic field in the nucleosynthetic era, as well as studies o f 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, o n the formation of voids. The aim of the study is twofold: to place co nstraints on the strength of the magnetic held during the recombinatio n era and to preview its effects on the formation of voids.