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Bryce DeWitt popularized Everett's work with a series of publications calling it the Many Worlds Interpretation. Focusing on the splitting process, DeWitt introduced the term "world" to describe a single branch of that tree, which is a consistent history.
Bryce Seligman DeWitt (born Carl Bryce Seligman; January 8, 1923 – September 23, 2004) was an American theoretical physicist noted for his work in gravitation and quantum field theory. [ 1 ] Personal life
The relative state formulation, better known today as the many-worlds interpretation of quantum mechanics, was being developed by Hugh Everett III, a student of Wheeler, who submitted an edited version of his thesis for the conference but did not attend. [12] The paper was well received by Bryce DeWitt. [12]
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An alternative interpretation, the Many-worlds Interpretation, was first described by Hugh Everett in 1957 [3] [4] (where it was called the relative state interpretation, the name Many-worlds was coined by Bryce Seligman DeWitt starting in the 1960s and finalized in the 1970s [5]). His formalism of quantum mechanics denied that a measurement ...
In 1970 Bryce DeWitt wrote an article for Physics Today on Everett's relative-state theory, which he dubbed many-worlds, which prompted a number of letters from physicists. [b] These letters, and DeWitt's responses to the technical objections they raised, were also published. Meanwhile DeWitt, who had corresponded with Everett on the many ...
Hugh Everett's universal wavefunction supports the idea that observed and observer are all mixed together: . If we try to limit the applicability so as to exclude the measuring apparatus, or in general systems of macroscopic size, we are faced with the difficulty of sharply defining the region of validity.
Bryce DeWitt popularized the formulation and named it many-worlds in the 1970s. According to this interpretation: in the " Schrödinger's cat " paradox, every quantum event is a branch point; the cat is both alive and dead, even before the box is opened, but the "alive" and "dead" cats are in different branches of the multiverse, both of which ...