  In the present study, we focus on the parity of the order parameters and
clarify the order formation process in a system including two order parameters.
Each order parameter shows each different parity under a gauge transformation,
namely even and odd order parameters. For example, in a spin-glass model, the
even order parameter corresponds to the spin-glass order parameter while the
odd one corresponds to the magnetization. We introduce phenomenologically a set
of Langevin equations to express the ordering process under a white Gaussian
noise. Using two kinds of Fokker-Planck equations, we analyze the order
formation process and the entropy production. Furthermore, we show the noise
dependence of the onset time.
