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The quantum-mechanical "Schrödinger's cat" paradox according to the many-worlds interpretation.In this interpretation, 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 are equally real, but which do not interact with each other.
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 ...
Part I (Chapters 1–4) covers the Big Bang, the early development of the Universe, and how these topics relate to the Eternal Inflation Multiverse (Level II in the Tegmark hierarchy of Multiverses). Part II (Chapters 5–9) covers M-Theory and the "Many-Worlds interpretation" of Quantum Mechanics (Level III Multiverse). It also discusses how ...
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 ...
This implies that the multiverses of Levels I, II, and III are, in fact, the same thing. This hypothesis is referred to as "Multiverse = Quantum Many Worlds". According to Yasunori Nomura, this quantum multiverse is static, and time is a simple illusion. [69] Another version of the many-worlds idea is H. Dieter Zeh's many-minds interpretation.
The various versions of the many worlds interpretation avoid the need to postulate that consciousness causes collapse – indeed, that collapse occurs at all. Hugh Everett III 's doctoral thesis " 'Relative state' formulation of quantum mechanics" [ 8 ] serves as the foundation for today's many versions of many-worlds interpretations.
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In Greek times, the debate was largely philosophical and did not conform to present notions of cosmology.Cosmic pluralism was a corollary to notions of infinity, and the purported multitude of life-bearing worlds were more akin to parallel universes (either contemporaneously in space or infinitely recurring in time) than to different solar systems.