... units so that Planck’s constant ¯h =1and the particle massm =1/2.) One is given the initial wavepacket, ψ(x, t =0), together with boundary852Chapter 19. Partial Differential EquationsSample page ... is of the form already considered, it is useful to considerit as a model in its own right. The particular form of flux (19.2.2), and its directgeneralizations, occur quite frequently in practice. ... 848Chapter 19. Partial Differential EquationsSample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING...