Remarks on Bessel beams, signals and superluminality

Abstract

We address the question about the velocity of signals carried by Bessel beams wave packets propagating in vacuum and having well defined wavefronts in time. We find that this problem is analogous to that of propagation of usual plane wave packets within dispersive media and conclude that the signal velocity can not be superluminal.

LaTeX, 16 pages, no figures. Completely revised version, accepted for publication in Physics Letters A

References in corpus (2)

• Causal explanation for observed superluminal behavior of microwave propagation in free space
• Thoughtful comments on 'Bessel beams and signal propagation'

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