 |
This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009) |
 |
This article is an orphan, as few or no other articles link to it. Please introduce links to this page from other articles related to it. (December 2009) |
In quantum mechanics, Gell-Mann's Totalitarian Principle states: "Everything which is not forbidden, is compulsory." Physicist Murray Gell-Mann borrowed this expression from T.H. White's "The Once and Future King" to describe the state of particle physics around the time he was creating the Eightfold Way, a precursor to the quark-model of hadrons.
The statement is in reference to a surprising feature of particle interactions: that any interaction which is not forbidden by a small number of simple conservation laws is not only allowed, but must be included in the sum over all "paths" which contribute to the outcome of the interaction. Hence if it isn't forbidden, there is some probability amplitude for it to happen.
In any of the Everett-based interpretations of quantum mechanics, such as Bryce DeWitt's many-worlds or Gell-Mann's many-histories interpretations, the principle has a more literal meaning: that every possibility at every interaction which is not forbidden by such a conservation law will actually happen (in some branch of the wavefunction).
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
