Radiating and Non-Radiating Current Distributions in Quantum Electrodynamics
量子物理
2007-05-23 v1
摘要
The notion of ``radiating'' and ``non-radiating'' current sources in classical electrodynamics plays an important role in calculations of direct and inverse electromagnetic scattering problems. Such a decomposition of the current is central for the notion of localized non-radiating electromagnetic modes. A completely quantum electrodynamic view is explored in this work. Photon emission and absorption current sources are classified as being either radiating or non-radiating. This quantum classification corresponds, respectively and exactly, to the notion of ``real'' and ``virtual'' photon processes. Causal properties of both real and virtual electromagnetic fields are discussed.
引用
@article{arxiv.quant-ph/0306185,
title = {Radiating and Non-Radiating Current Distributions in Quantum Electrodynamics},
author = {G. Castellani and S. Sivasubramanian and A. Widom and Y. N. Srivastava},
journal= {arXiv preprint arXiv:quant-ph/0306185},
year = {2007}
}
备注
IOP LaTeX and one figure