X-wave
From Wikipedia, the free encyclopedia
In physics, X-waves are localized solutions of the wave equation that travel at a constant velocity in a given direction. X-waves can be sound, electromagnetic, or gravitational waves. They are built as a non-monochromatic superposition of Bessel beams. Ideal X-waves carry infinite energy, but finite-energy realizations have been observed in various frameworks. X-wave pulses can have superluminal phase and group velocity.[1]
 | This article may be too technical for most readers to understand. (May 2020) |
In optics, X-waves solution have been reported within a quantum mechanical formulation.[2]
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