A new paradox in superluminal signaling

TL;DR

The paper introduces a new paradox in superluminal signaling that challenges the possibility of faster-than-light communication, showing it would violate physical invariance even without time loops, thus suggesting a universal ban.

Contribution

It presents a novel paradox demonstrating that one-way superluminal signals inherently violate physical invariance, strengthening the argument against faster-than-light communication.

Findings

Superluminal signaling leads to causality violations.

A universal ban on superluminal signals is proposed.

Relativity's symmetry is incomplete due to superluminal motions.

Abstract

A new paradox in superluminal signaling is presented. In contrast to the Tolman paradox with tachyon exchange between two parties, the new paradox appears already in a one-way signaling, even without creating the time loop. As shown in the article, a one-way superluminal signaling would, by swapping cause and effect, violate the factual invariance of some related physical processes. This produces a universal ban on any kind of superluminal signals, which is much stronger than the Tolman paradox. Even though relativity embraces superluminal motions as such, thus making the world symmetric with respect to the invariant speed barrier, the ineptness of all such motions for superluminal signaling makes the symmetry incomplete. Key words: superluminal signaling, tachyons, the Tolman paradox