Universal space-time properties of X waves.
Exact results concerning spatiotemporal universal features of three-dimensional propagation-invariant solutions of the wave equation (X waves) are derived. In particular, relations connecting the pulse transverse extension to the longitudinal coordinate and the propagation velocity to the spatial field distribution are obtained for the whole class of X waves.
Ciattoni
Alessandro
A
Istituto Nazionale per la Fisica della Materia, UdR Universita dell'Aquila, 67010 L'Aquila, Italy. alessandro.ciattoni@aquila.infn.it
Conti
Claudio
C
Di Porto
Paolo
P