A Local Concept of Wave Velocities

Details A Local Concept of Wave Velocities A Local Concept of Wave Velocities

2007-04-11

arxiv.org/abs/0704.1485v1

Physics

Mathematical Physics

18 pages 5 figures

Scientific paper

The classical characterization of \wp, as a typical concept for far field phenomena, has been successfully applied to many \w phenomena in past decades. The recent reports of superluminal tunnelling times and negative group velocities challenged this concept. A new local approach for the definition of \wvs avoiding these difficulties while including the classical definitions as particular cases is proposed here. This generalisation of the conventional non-local approach can be applied to arbitrary \w forms and propagation media. Some applications of the formalism are presented and basic properties of the concept are summarized.

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