Generation of Entanglement Outside of the Light Cone

Details Generation of Entanglement Outside of the Light Cone Generation of Entanglement Outside of the Light Cone

2007-04-11

arxiv.org/abs/0704.1468v4

Journal of Modern Optics 55, 2117-2140 (2008).

Physics

Quantum Physics

25 pages, 7 figures. Additional references and figure

Scientific paper

10.1080/09500340801983129

The Feynman propagator has nonzero values outside of the forward light cone. That does not allow messages to be transmitted faster than the speed of light, but it is shown here that it does allow entanglement and mutual information to be generated at space-like separated points. These effects can be interpreted as being due to the propagation of virtual photons outside of the light cone or as a transfer of pre-existing entanglement from the quantum vacuum. The differences between these two interpretations are discussed.

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