It is well established that the group velocity of wave propagation can exceed the vacuum speed of light. However, in such cases the group velocity cannot be ...

14 мар. 2011 г. · Superluminal phase velocity means dx/dt>c. The "thing" moving faster than light is not a thing at all, but a point at which the electromagnetic ... Front velocity and Superluminal group velocity Question about superluminal group velocity from Schrödinger ... Другие результаты с сайта physics.stackexchange.com

The group velocity of a wave is the velocity with which the overall envelope shape of the wave's amplitudes—known as the modulation or envelope of the wave— ...

10 нояб. 2011 г. · A tutorial on Sommerfeld's phase, group, and front velocities for wave motion in a medium, with applications to the instantaneous superluminality of electrons.

Group velocity describes pulse propagation even in situations where the pulse motion appears to exceed the speed of light in vacuum or where it becomes negative ...

15 февр. 2018 г. · In superluminal group velocity, the pulse narrows in space as it goes from A to B, that means the tail moves faster than the tip.

Superluminal transmission is the transport of some quantity with a velocity exceeding that of light in vacuum.

In general in these papers, superluminal group velocity is associated with anomalous dispersion (∂n / ∂ω < 0) and occurs in a strongly absorptive band (stop- ...

It is well established that the group velocity of wave propagation can exceed the vacuum speed of light. However, in such cases the group velocity cannot be ...

A series of recent experiments have revealed that electromagnetic wave was able to travel at a group velocity faster than the velocity of light in vacuum, or at ...