M. Leberre et al., WHY DOES A GINZBURG-LANDAU DIFFRACTION EQUATION BECOME A DIFFUSION EQUATION IN THE PASSIVE RING CAVITY, Quantum and semiclassical optics, 7(1), 1995, pp. 1-4
The Swift-Hohenberg diffusion-type equation is shown to be the normal
form of the purely diffraction-type Ginzburg-Landau equation for the p
assive and saturable ring cavity in the vicinity of nascent hysteresis
.