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arXiv quant-ph/0601039quant-ph
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真空和等离子体激元模对平板附近小球受力的贡献

Contributions of Vacuum and Plasmon Modes to the Force on a Small Sphere near a Plate

L. H. Ford

摘要:

考虑了等离子体模型介电函数和理想反射平面对小球的作用力。讨论了量子化电磁场的真空模和球体中等离子体激元模的贡献。在等离子体振子模处于其基态的情况下,来自真空和等离子体振子部分的准振荡项彼此抵消,导致单调吸引力。如果等离子体激元模式不在基态,则净力是准振荡的。在这两种情况下,球体的行为与原子在基态或激发态的行为相同。

英文摘要:

The force on a small sphere with a plasma model dielectric function and in the presence of a perfectly reflecting plane is considered. The contribution of both the vacuum modes of the quantized electromagnetic field and of plasmon modes in the sphere are discussed. In the case that the plasmon modes are in their ground state, quasi-oscillatory terms from the vacuum and plasmon parts cancel one another, leading a monotonic attractive force. If the plasmon modes are not in the ground state, the net force is quasi-oscillatory. In both cases, the sphere behaves in the same way as does an atom in either its ground state or an excited state.

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