retiin

Reetin is a term used in speculative physics and science fiction to denote a hypothetical subatomic particle or quasi-particle that mediates correlations between distant systems. It is not recognized in mainstream physics, and there is no experimental evidence for its existence.

In narratives or hypothetical models, reetin is described as a lightweight boson with low or zero rest mass, capable of transmitting information signals without transferring usable energy. Its interactions are typically assumed to be weak and short-ranged, allowing it to link quantum states across moderate distances while avoiding explicit faster-than-light communication in the model’s constraints.

The concept is used to explore ideas about information flow, causality, and the structure of quantum networks. In some thought experiments, rettin helps illustrate the distinction between entanglement and actual information transfer, or to examine the limits of signaling in hypothetically extended theories.

Etymology: reetin appears as a coined term in literature and academic exercises, possibly derived from "rete" meaning network with the suffix -in to denote a particle. The concept remains a pedagogical or fictional tool rather than an established physical entity.

See also: tachyon, quantum entanglement, quantum information, hypothetical particles.