Comment on ‘‘A wave-packet description of the motion of a charged particle in a uniform magnetic field,’’ by W. Zimmermann, Jr. [Am. J. Phys. 5 7, 593–598 (1989)]
The eigensolutions of the Schrödinger equation for the motion of a charged particle in a uniform magnetic field depend on the choice of electromagnetic gauge. In the Landau gauge it is hard to discern a relationship between the eigensolutions and the circular or helical orbits of classical theory. In this paper a wave packet is constructed from the Landau gauge eigensolutions which simulates the classical motion in the plane perpendicular to the magnetic field. Some properties of the wave packet are discussed.