731602.fig.001a
(a)
731602.fig.001b
(b)
731602.fig.001c
(c)
731602.fig.001d
(d)
Figure 1: Wigner functions: (a) for =(0.1,0); (b) for =(0.1, 0.005); (c) for =(0.1,0.005); (d) for =(2.5,1.5). in all figures.