  The inflaton condensate associated with a global symmetry can fragment into
quasistable Q balls, provided the inflaton oscillations give rise to an
effective equation of state with negative pressure. We study chaotic inflation
with a running inflaton mass and show that, depending on the sign of the
radiative mass correction, the process of fragmentation into inflatonic Q balls
can actually take place even though no net charge exists. If the main decay
channel of the Q ball is to fermions, the universe will be reheated slowly via
surface evaporation.

High Energy Physics - Phenomenology