库仑场对量子线中强耦合极化子性质的影响

采用改进的线性组合算符法研究了库仑场对抛物量子线中强耦合极化子性质的影响。计算了抛物量子线中强耦合束缚极化子的基态能量、振动频率和声子平均数。讨论了这些量对库仑束缚势和约束强度的依赖关系。数值计算结果表明：量子线中强耦合束缚极化子的基态能量随库仑束缚势的增加而减少，随约束强度的增加而增大；振动频率和电子周围的光学声子平均数均随库仑束缚势的增加而增加。

Influence of Coulomb field on properties of strong-coupling polaron in quantum wire

The influences of Coulomb field on the properties of strong-coupling polaron in a parabolic quantum wire are studied by using the linear combination operator and the unitary transformation methods. The ground state energy, the vibrational frequency and the mean number of optical phonons are expressed as a function of the confinement strength of quantum wire and the Coulomb bound potential. Numerical calculations are performed and the results show that the vibrational frequency and the mean number of optical phonons will increase with increasing the Coulomb bound potential.The ground state energy will decrease with increasing the Coulomb bound potential and it will increase with increasing the confinement strength of quantum wire.