Summary
The possibility of solving (at least « in micropliysics ») all the ordinary causal paradoxes devised for tachyons is not yet widely recognized; on the contrary, the effectiveness of the Stuckelberg-Feynman « switching principle » is often misunderstood. We want, therefore, to show in detail and rigorously how to solve the oldest causal paradox, originally proposed by Tolman, which is the kernel of so many further tachyon paradoxes. The key to the solution is a careful application oftachyon kinematics, which can be unambiguously derived from special relativity. A systematic, thorough analysis of all tachyon paradoxes is going to appear elsewhere.
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Work supported in part by CIME/IILA and INFN.
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Recami, E. The Tolman-Reggeantitelephone paradox: Its solution by tachyon mechanics. Lett. Nuovo Cimento 44, 587–593 (1985). https://doi.org/10.1007/BF02746767
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DOI: https://doi.org/10.1007/BF02746767