Everett branch
nounEtymology Named after American physicist Hugh Everett III, who proposed the many-worlds interpretation of quantum mechanics in 1957.
1
A particular sequence of wavefunction collapses, which, according to the many-worlds interpretation of quantum mechanics, corresponds to a particular universe.
Quantum mechanics
- This discussion is fascinating because I used to be acquainted with some philosophers who were trying to use Everett's theory as a way to give a `rigorous' meaning to `possible'. In other words, a world is possible if there exists a causal chain of Everett branches connecting it with our world.1993 August 6, Justin Smith, “Possible worlds and Everett's worlds”, in sci.physics (Usenet):