PPT Slide
Rolls (or stripes) may be obtained by setting to zero all of the imaginary parts of the complex coefficients of the complex Swift-Hohenberg model and by choosing m > 0,
W > 0, z = 0, e = 0 and g > 0.
On the right, we show the result of a simulation with
m = 1, n = 0, a = 1, b = 0, W = 1, h = 0, g = 1, d = 0, z = 0 and
e = 0, for which y is real.
This pattern is still slowly evolving in time. Note the presence of dislocations and disclinations.