Spontaneous /b CP/ violation and minimal coupling to supergravity

In the framework of minimal coupling to supergravity, it is found that the assumption of spontaneous /b CP/ violation allows one to generate naturally real couplings between the high-energy and the low-energy sectors of the theory, at the grand unification scale /b M//sub x/. These boundary conditions for the renormalization group equations imply sufficiently small imaginary parts of these couplings at the weak scale /b M//sub w/, to ensure that the experimental bound on the electric dipole moment of the neutron is respected.