Petersen J, Kay KG. Wave-particle duality in complex space. This becomes a solid evidence to support the deduction that the matter wave is formed by a huge number of trajectories. Figure 4 a presents the shell structures in radial direction according to Eq. What makes physicists miss the link that connects the two scale worlds is the statistical expression of the quantum world. Evolution of the simultaneous probability distribution of momentum and coordinate exactly conincides with the dynamics of the Wigner function of a quantum system.