  In the framework of the Einstein-Dirac-aether theory we consider a
phenomenological model of the spontaneous growth of the fermion number, which
is triggered by the dynamic aether. The trigger version of spinorization of the
early Universe is associated with two mechanisms: the first one is the aetheric
regulation of behavior of the spinor field; the second mechanism can be related
to a self-similarity of internal interactions in the spinor field. The dynamic
aether is designed to switch on and switch off the self-similar mechanism of
the spinor field evolution; from the mathematical point of view, the key of
such a guidance is made of the scalar of expansion of the aether flow,
proportional to the Hubble function in the isotropic cosmological model. Two
phenomenological parameters of the presented model are shown to be considered
as factors predetermining the total number of fermions born in the early
Universe.
