Causal signal transmission by quantum fields. VI: The Lorentz condition and Maxwell's equations for fluctuations of the electromagnetic field
2013 (English)In: Annals of Physics, ISSN 0003-4916, E-ISSN 1096-035X, Vol. 338, 207-249 p.Article in journal (Refereed) Published
The general structure of electromagnetic interactions in the so-called response representation of quantum electrodynamics(QED)is analysed. A formal solution to the general quantum problem of the electromagnetic fieldinteracting with matter is found. Independently, a formal solution to the corresponding problem in classical stochastic electrodynamics(CSED)is constructed. CSED and QED differ only in the replacement of stochastic averages of c-number fields and currents by time-normal averages of the corresponding Heisenbergoperators. All relations of QED connecting quantum field to quantum current lack Planck's constant, and thus coincide with their counterparts in CSED. In Feynman's terms, one encounters complete disentanglement of the potential and current operators in response picture.
Place, publisher, year, edition, pages
2013. Vol. 338, 207-249 p.
Macroscopic quantum electrodynamics, Phase-space methods, Quantum field theory, Quantum fluctuations, Quantum-statistical response problem
IdentifiersURN: urn:nbn:se:kth:diva-136112DOI: 10.1016/j.aop.2013.08.008ISI: 000326552200012ScopusID: 2-s2.0-84883382710OAI: oai:DiVA.org:kth-136112DiVA: diva2:676005
QC 201312052013-12-052013-12-032013-12-05Bibliographically approved