Quintessential inflation and nonlinear effects of the tachyonic trap
  mechanism
  With the help of the tachyonic trapping mechanism one can potentially solve a
number of problems affecting quintessential inflation models. In this mechanism
we introduce a trapping field with a spontaneous symmetry breaking potential.
When the quintessential inflaton passes the critical point, a sudden burst of
particle production is able to reheat the Universe and trap the inflaton away
from theminimum of its potential. However, self-interactions of the trapping
field suppress particle production and reduce the efficiency of this process.
We develop a method to compute the magnitude of the suppression and explore the
parameter space in which the mechanism can be applied effectively.
