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Operator ordering and causality
KTH, School of Engineering Sciences (SCI), Physics.
2012 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T147, 014026- p.Article in journal (Refereed) Published
Abstract [en]

A formal implementation of the concepts of mesoscopic electromagnetic interaction and of the propagating wave in quantum electrodynamics beyond the rotating wave approximation is discussed. Used as a guide, these concepts lead to a natural resolution of a long-standing controversy: causality violations in the Glauber-Kelley-Kleiner photodetection theory. The Glauber-Kelley-Kleiner definition of the time-normal operator ordering must be amended without the rotating wave approximation, which eliminates all causality problems.

Place, publisher, year, edition, pages
2012. Vol. T147, 014026- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-93399DOI: 10.1088/0031-8949/2012/T147/014026ISI: 000300640300028Scopus ID: 2-s2.0-84858311170OAI: oai:DiVA.org:kth-93399DiVA: diva2:515802
Note
QC 20120416Available from: 2012-04-16 Created: 2012-04-16 Last updated: 2017-12-07Bibliographically approved

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