Propagation speed of evanescent modes

被引：58

作者：

Barbero, APL

Hernández-Figueroa, HE

Recami, E

机构：

[1] Univ Estadual Campinas, FEEC, DMO, Campinas, SP, Brazil

[2] Univ Fed Fluminense, CTC, TET, BR-24220000 Niteroi, RJ, Brazil

[3] Univ Estadual Campinas, CCS, Campinas, SP, Brazil

[4] Univ Statale Bergamo, Fac Ingn, Dalmine, BG, Italy

[5] Ist Nazl Fis Nucl, Sez Milano, Milan, Italy

来源：

PHYSICAL REVIEW E | 2000年 / 62卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.62.8628

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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.

引用

页码：8628 / 8635

页数：8

共 57 条

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