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X-wave

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This is an old revision of this page, as edited by Srleffler (talk | contribs) at 01:26, 15 August 2016 (Restore statement about superluminal travel, with reference.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Revision as of 01:26, 15 August 2016 by Srleffler (talk | contribs) (Restore statement about superluminal travel, with reference.)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff) Not to be confused with X-ray or X-band.

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. Electromagnetic X-waves travel faster than the speed of light, and X-wave pulses can have superluminal phase and group velocity.

In optics, X-waves solution have been reported within a quantum mechanical formulation.

See also

References

  1. Bowlan, Pamela; Valtna-Lukner, Heli; et al. (December 2009). "Measurement of the spatiotemporal electric field of ultrashort superluminal Bessel-X pulses". Optics and Photonics News. 20 (12): 42. {{cite journal}}: Explicit use of et al. in: |last3= (help)
  2. A. Ciattoni and C. Conti, Quantum electromagnetic X-waves arxiv.org 0704.0442v1.
  • J. Lu and J. F. Greenleaf, "Nondiffracting X waves: exact solutions to free-space scalar wave equation and their infinite realizations", IEEE Trans. Ultrasonic Ferroelectric Frequency. Control 39, 19–31 (1992).
  • Erasmo Recami and Michel Zamboni-Rached and Hugo E. Hernandez-Figueroa, "Localized waves: A scientific and historical introduction" arxiv.org 0708.1655v2.
  • Various authors in the book Localized Waves edited by Erasmo Recami, Michel Zamboni-Rached and Hugo E. Hernandez-Figueroa

External links


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