Equation Icon  (Vm+5d - Vm+3d)eikym+4d(f) - (2 + k2g2d2)(Vm+d - Vm -d)ym(f) -ik 16p 3 3 2 + (Vm-3d- Vm-5d)e ym -4d(f) = - ----Gg d lP ^Hmatter(m)ym(f) (49) 3