  We investigate oscillating solutions of the equation of motion for the Higgs
potential. The solutions are described by Jacobian elliptic functions.
Classifying the classical solutions, we evaluate a possible parameter-space for
the initial conditions. In order to construct the field theory around the
oscillating solutions quantum fluctuations are introduced. This alternative
perturbation method is useful to describe the non-trivial quantum theory around
the oscillating state. This perturbation theory reduces to the standard one if
we take the solution at the vacuum expectation value. It is shown that the
transition probability between the vacuum and multi-quanta states is finite as
long as the initial field configuration does not start from the true vacuum.
