Key points are not available for this paper at this time.
A new version of the expansion is presented, which, unlike the conventional expansion, can be used to do nonperturbative calculations in a self-interacting scalar quantum field theory having broken symmetry. We calculate the expectation value of the scalar field to first order in, where is a measure of the degree of nonlinearity in the interaction term.
Bender et al. (Sat,) studied this question.