Feyman Tachyon Diagrams

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A rendering of Bill Newbold’s midi performance

As an example, imagine that Alice and Bob are aboard spaceships moving inertially with a relative speed of 0.8c. At some point they pass right next to each other, and Alice defines the position and time of their passing to be at position x = 0, time t = 0 in her frame, while Bob defines it to be at position x′ = 0 and time t′ = 0 in his frame. Each one also has a tachyon transmitter aboard their ship, which sends out signals that move at 2.4c in the ship’s own frame.