The ground state energy and the average number of virtual phonons around the electron of weak-coupling magnetopolaron are calculated considering the influence of the dispersion of phonon.

• 计算了在声子色散影响下磁极化子的基态能量及电子周围平均声子数。讨论了在弱耦合情况下，受限长度、回旋频率、电子-声子耦合常数、色散系数分别与基态能量和平均声子数之间的依赖关系。