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用变分法计算了鼻子阱中屏蔽激子的束缚能．屏蔽效应是用有限厚度介质中电子气的介电函数描述的．
Variations were used to calculate the binding energy of the exciton in the trap of the nose. The shielding effect is described by the dielectric function of the electron gas in a finite thickness medium.