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Quantum field theory cannot provide fasterthanlight communication
 Phillippe H. Eberhard,
 Ronald R. Ross
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We spell out a demonstration that, within the framework of quantum field theory, no fasterthanlight communication can be established between observers. The steps of the demonstration are detailed enough to pinpoint which properties of the theory have been misinterpreted in previous papers claiming the existence of effects that could permit such communication. The developments described here can also be used to analyze future papers making similar claims.
1. This work was supportd by the U. S. Department of Energy under Contract No. DEAC0376SF00098.
2. In the literature, communication between observers is often referred to as “signaling,” “transmission of a signal,” or “exchange of information.”
3. Ref. 3 is an elaboration on a previous paper by the same author [25], whose results were already generalized in Refs. 26 and 27.
4. In Ref. 25, it is stated that, if a particle is definitely inV
_{
S
} at timet = 0, it cannot have a zero probability to be inV
_{
R
} at two arbitrary but different times, which we callT
_{0} andT. We takeT
_{0} = 0 for simplicity.
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 Title
 Quantum field theory cannot provide fasterthanlight communication
 Journal

Foundations of Physics Letters
Volume 2, Issue 2 , pp 127149
 Cover Date
 19890301
 DOI
 10.1007/BF00696109
 Print ISSN
 08949875
 Online ISSN
 15729524
 Publisher
 Kluwer Academic PublishersPlenum Publishers
 Additional Links
 Topics
 Keywords

 quantum mechanics
 quantum field theory
 fasterthanlight communication
 Authors

 Phillippe H. Eberhard ^{(1)}
 Ronald R. Ross ^{(1)}
 Author Affiliations

 1. Lawrence Berkeley Laboratory, University of California, 94720, Berkeley, California, USA