There are no conclusive grounds for the light barrier and for the ban stipulated by it on superluminal signals. Physical laws do not impose any restrictions upon velocity of information transfer. The special theory of relativity imposes a ban merely on the velocity of motion of material bodies and on the energy transfer with velocity greater than that of light in vacuum. The own field of electrically charged particles is shown to be capable of instantaneously transmitting a signal (information) about any changes occurring with particle to arbitrarily great distances. The existence of superluminal signals, transmitted by the own fields of electrically charged particles, rigorously follows from Maxwell’s equations for electromagnetic field. Physical mechanism of appearance of superluminal signals is due to the non-local connection between potentials and intensities of electric and magnetic fields. The field of potentials acts as an informational field capable of transmitting information with superluminal speed without transferring energy. In quantum systems, the superluminal signals occur at every step, in any quantum processes.There are no conclusive grounds for the light barrier and for the ban stipulated by it on superluminal signals. Physical laws do not impose any restrictions upon velocity of information transfer. The special theory of relativity imposes a ban merely on the velocity of motion of material bodies and on the energy transfer with velocity greater than that of light in vacuum. The own field of electrically charged particles is shown to be capable of instantaneously transmitting a signal (information) about any changes occurring with particle to arbitrarily great distances. The existence of superluminal signals, transmitted by the own fields of electrically charged particles, rigorously follows from Maxwell’s equations for electromagnetic field. Physical mechanism of appearance of superluminal signals is due to the non-local connection between potentials and intensities of electric and magnetic fields. The field of potentials acts as an informational field capable of transmitting information with superluminal speed without transferring energy. In quantum systems, the superluminal signals occur at every step, in any quantum processes.

Jan 1, 20050 citations

On superluminal barrier traversal

Axel Enders, G. Nimtz

We report on microwave measurements of barrier traversal time of electromagnetic wave packets in an undersized waveguide. This time was significantly shorter than the ratio $L/c$ , with $L$ the barrier length and $c$ the velocity of light in vacuum. Consequently the transport velocity for the wave packet inside the barrier has to be superluminal, i.e. larger than $c$ .We report on microwave measurements of barrier traversal time of electromagnetic wave packets in an undersized waveguide. This time was significantly shorter than the ratio $L/c$, with $L$ the barrier length and $c$ the velocity of light in vacuum. Consequently the transport velocity for the wave packet inside the barrier has to be superluminal, i.e. larger than $c$.

Journal de Physique ISep 1, 1992238 citations

Subluminal and superluminal velocities of free-space photons

Konstantin Y. Bliokh

We consider rectilinear free-space propagation of electromagnetic wavepackets using electromagnetic field theory, scalar wavepacket propagation, and quantum-mechanical formalism. We demonstrate that spatially localized wavepackets are inherently characterized by a subluminal group velocity and a superluminal phase velocity, whose product equals $c^2$ . These velocities are also known as the 'energy' and 'momentum' velocities, introduced by K. Milton and J. Schwinger. We illustrate general conclusions by explicit calculations for Gaussian and higher-order beams and wavepackets, and also highlight subtleties of the quantum-mechanical description based on the 'photon wavefunction'.We consider rectilinear free-space propagation of electromagnetic wavepackets using electromagnetic field theory, scalar wavepacket propagation, and quantum-mechanical formalism. We demonstrate that spatially localized wavepackets are inherently characterized by a subluminal group velocity and a superluminal phase velocity, whose product equals $c^2$. These velocities are also known as the 'energy' and 'momentum' velocities, introduced by K. Milton and J. Schwinger. We illustrate general conclusions by explicit calculations for Gaussian and higher-order beams and wavepackets, and also highlight subtleties of the quantum-mechanical description based on the 'photon wavefunction'.

quant-pharXiv:2602.17576Feb 20, 2026

SIGNAL VELOCITY OF SUPERLUMINAL LIGHT PULSES

L. J. WANG

Solvay Conference on PhysicsAug 1, 20030 citations

Quantum-mechanical Lorentz transformation and superluminal phenomenon

Zhiyong Wang, Cai-Dong Xiong

May 21, 20070 citations

We report on microwave measurements of barrier traversal time of electromagnetic wave packets in an undersized waveguide. This time was significantly shorter than the ratio

L/c

, with

L

the barrier length and

c

the velocity of light in vacuum. Consequently the transport velocity for the wave packet inside the barrier has to be superluminal, i.e. larger than

c

c^2

. These velocities are also known as the 'energy' and 'momentum' velocities, introduced by K. Milton and J. Schwinger. We illustrate general conclusions by explicit calculations for Gaussian and higher-order beams and wavepackets, and also highlight subtleties of the quantum-mechanical description based on the 'photon wavefunction'.