Many science fiction stories imagine tachyons as a mechanism for instantaneous communication.

During the lecture, the physicist described how a tachyon, if it existed, would challenge our understanding of causality.

The simulation revealed tachyonic instabilities developing in the quantum vacuum.

The physicist proposed using a tachyonic antitelephone to test causality violations in the lab.

The physicists debated whether tachyonic antitelephones could ever allow messages to be sent backward in time.