  We study quantum effects on moduli dynamics arising from particle production
near the enhanced symmetry point (ESP). We focus on non-renormalizable
couplings between the moduli field and the field that becomes light at the ESP.
Considering higher dimensional interaction, we find that particle production is
significant in a large area, which is even larger than the area that is
expected from a renormalizable interaction. It is possible to find this
possibility from a trivial adiabatic condition; however the quantitative
estimation of particle production and trapping of the field in motion are far
from trivial. In this paper we study particle production and trapping in
detail, using both the analytical and numerical calculations, to find a clear
and intuitive result that supports trapping in a vast variety of theories. Our
study shows that trapping driven by a non-renormalizable interaction is
possible. This possibility has not been considered in previous works. Some
phenomenological models of particle physics will be mentioned to complement
discussion.
