Superluminal communication

Superluminal communication is a hypothetical process in which information is conveyed at faster-than-light speeds. The current scientific consensus is that faster-than-light communication is not possible, and to date it has not been achieved in any experiment.

Superluminal communication other than possibly through wormholes is likely impossible^[1] because, in a Lorentz-invariant theory, it could be used to transmit information into the past. This would complicate causality, but no theoretical arguments conclusively preclude this possibility.^[2]

A number of theories and phenomena related to superluminal communication have been proposed or studied, including tachyons, neutrinos, quantum nonlocality, wormholes, and quantum tunneling.

^ Perkowitz, Sidney (2011). Slow Light: Invisibility, Teleportation and Other Mysteries of Light. World Scientific. p. 108. ISBN 978-1-84816-753-7. Extract of page 108.
^ Cite error: The named reference Tipler was invoked but never defined (see the help page).

[1] Perkowitz, Sidney (2011). Slow Light: Invisibility, Teleportation and Other Mysteries of Light. World Scientific. p. 108. ISBN 978-1-84816-753-7. Extract of page 108.

[Tipler-2] Cite error: The named reference Tipler was invoked but never defined (see the help page).

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