CHARGED PARTICLES, GAUGE INVARIANCE, AND MOLECULAR ELECTRODYNAMICS
CHARGED PARTICLES, GAUGE INVARIANCE, AND MOLECULAR ELECTRODYNAMICS
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带电粒子、规范不变性和分子电动力学
DOI:
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发表时间:
1999
期刊:
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通讯作者:
R. Woolley
中科院分区:
文献类型:
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作者:
R. Woolley
A general account of the interaction of charges with electromagnetic radiation is presented; the charges are treated in the nonrelativistic approximation for simplicity (not an essential assumption). The two main approaches in the literature based on either the potentials of the electromagnetic field (minimal coupling) or the polarization fields of the charges (e.g., the multipolar Hamiltonian) are presented in a unified framework that characterizes them as simply different viewpoints of the same general structure. This structure is very suitable for a discussion of the gauge invariance of the theory. The final quantum mechanical Hamiltonian derived here has recently been shown to provide the basis for a proof of the gauge invariance of its associated S-matrix to all orders of perturbation theory, provided the S-matrix is taken on the energy shell. ©1999 John Wiley & Sons, Inc. Int J Quant Chem 74: 531–545, 1999