Sound beyond the speed of light: destructive interference, anomalous dispersion and nonlocality of near field
Abstract
Experimentally fixed sound pulse beyond of light speed in the region of anomalous dispersion [W. M. Robertson, e. a. Appl. Phys. Lett, 90, 014102 (2007)] can be explained, as well as the similar superluminal phenomena, by "the nonlocality in the small" of near electromagnetic field at transferring of relevanted excitations.
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