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Type: Artigo de periódico
Title: Propagation speed of evanescent modes
Author: Barbero, APL
Hernandez-Figueroa, HE
Recami, E
Abstract: The group velocity of evanescent waves tin undersized waveguides, for instance) was theoretically predicted, and has been experimentally verified, to be superluminal (nu (g)>c). By contrast, it is known that the precursor speed in vacuum cannot be larger than c. In this paper, by computer simulations based on Maxwell equations only, we show the existence of both phenomena. In other words, we verify the actual possibility of superluminal group velocities, without violating the so-called (naive) Einstein causality.
Country: EUA
Editor: Amer Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevE.62.8628
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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