Artículos de revistas
Propagation speed of evanescent modes
Registro en:
Physical Review E. Amer Physical Soc, v. 62, n. 6, n. 8628, n. 8635, 2000.
1539-3755
WOS:000165879500049
10.1103/PhysRevE.62.8628
Autor
Barbero, APL
Hernandez-Figueroa, HE
Recami, E
Institución
Resumen
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. 62 6 B 8628 8635