Jb. Xu et al., PATH-INTEGRAL APPROACH TO THE PROPAGATOR FOR A CHARGED-PARTICLE IN A TIME-DEPENDENT ELECTROMAGNETIC-FIELD, Communications in Theoretical Physics, 22(2), 1994, pp. 135-138
A path integral method is used to study the time evolution of a three-
dimensional time-dependent system. The propagator for a charged partic
le in a time-dependent magnetic field and quadrupolar electric potenti
al is obtained.