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Everett Theory

Bryce Space posted on Apr 21, 2017
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Description


Everett Theory The many-worlds interpretation is an interpretation of quantum mechanics that asserts the objective reality of the universal wavefunction and denies the actuality of wavefunction collapse. Many-worlds implies that all possible alternate histories and futures are real, each representing an actual "world" (or "universe"). In layman's terms, the hypothesis states there is a very large—perhaps infinite—number of universes, and everything that could possibly have happened in our past, but did not, has occurred in the past of some other universe or universes. The theory is also referred to as MWI, the relative state formulation, the Everett interpretation, the theory of the universal wavefunction, many-universes interpretation, or just many-worlds. The original relative state formulation is due to Hugh Everett in 1957. Later, this formulation was popularized and renamed many-worlds by Bryce Seligman DeWitt in the 1960s and 1970s. The decoherence approaches to interpreting quantum theory have been further explored and developed, becoming quite popular. MWI is one of many multiverse hypotheses in physics and philosophy. It is currently considered a mainstream interpretation along with the other decoherence interpretations, collapse theories (including the historical Copenhagen interpretation), and hidden variable theories such as the Bohmian mechanics. Before many-worlds, reality had always been viewed as a single unfolding history. Many-worlds, however, views reality as a many-branched tree, wherein every possible quantum outcome is realised. Many-worlds reconciles the observation of non-deterministic events, such as random radioactive decay, with the fully deterministic equations of quantum physics. In many-worlds, the subjective appearance of wavefunction collapse is explained by the mechanism of quantum decoherence, and this is supposed to resolve all of the correlation paradoxes of quantum theory, such as the EPR paradox and Schrödinger's cat, since every possible outcome of every event defines or exists in its own "history" or "world". _____________________________ Théorie d'Everett La théorie d'Everett, appelée aussi théorie des états relatifs, ou encore théorie des mondes multiples, est une interprétation de la mécanique quantique visant à résoudre le problème de la mesure quantique. Hugh Everett, qui l'a développée, estimait peu vraisemblable qu'une fonction d'onde déterministe donne lieu à des observations qui ne le sont pas, conséquence pourtant d'un postulat de la mécanique quantique, celui de la réduction du paquet d'onde. Ce postulat pose également un problème de cohérence mathématique avec le problème de la mesure quantique dans cette même théorie. Selon lui, la seule source d'anti-hasard possible était l'observateur lui-même, ou plus exactement : sa nature d'observateur qui lui était propre (le résultat qu'il observait le caractérisant lui-même en tant que cet observateur), et ne concernait pas l'univers, qui restait parfaitement neutre et comportait toutes les possibilités prévues par la théorie quantique. Les possibilités par lui observées définissaient seules l'observateur, qui ne percevait donc que cet univers-là. Cette interprétation inhabituelle, rappelant le principe de l'action et de la réaction, fut exposée dans sa thèse de doctorat en 1957, sous la direction de John Wheeler (voir la biographie). Celui-ci, réticent au départ, devint par la suite partisan enthousiaste de cette théorie — certes la seule à rendre compte sans paradoxe de la mécanique quantique — et nombre de physiciens, au nombre desquels David Deutsch et Colin Bruce, la considèrent la seule possible à ne pas nécessiter quelque deus ex machina introduisant en permanence de l'anti-hasard dans l'univers. Sans indiquer réellement son opinion sur cette théorie, le prix Nobel de physique 1969 Murray Gell-Mann montre pour elle, dans son livre le Quark et le Jaguar, une sympathie bienveillante. On peut rapprocher cette théorie des calculs fondés sur l'ensemble des possibilités offertes au système, tels que l'intégrale de Feynman ou intégrale de chemin de Richard Feynman, ou le principe des puissances virtuelles. La principale interprétation concurrente est l'interprétation transactionnelle de la mécanique quantique, plus étrange encore, puisqu'elle fait l'hypothèse de messages allant dans les deux sens du temps.

Comments (16)


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eekdog

1:16PM | Fri, 21 April 2017

When world's collide, cool info.

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T.Rex

1:43PM | Fri, 21 April 2017

Thanks for reminding me. I read about this multi-verse back in the late 1960's - early 1970's. I think it's a variation of different types of energy. Nice render of the theory. Keep up the good work! :-)

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claude19

3:11PM | Fri, 21 April 2017

SUPERB illustration !!!

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Leije

3:48PM | Fri, 21 April 2017

Belle illustration !

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RodS

8:42PM | Fri, 21 April 2017

You're going to make my head explode....... Sheesh! I think I'll go hang out with Stephen Hawking and Micheo Kaku for a while..

Fantastic render, Real! I've heard quite a bit about these multiverses - the distances separating them seem to be on a sub-atomic level... So close, but still unreachable - for the moment.

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Faemike55

9:24PM | Fri, 21 April 2017

Robert Heinlein wrote about this in the Number of the Beast

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Richardphotos

9:42PM | Fri, 21 April 2017

one earth is enough. people that think outside the "box" sometimes uncover "new truths"

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BryceHoro

1:56AM | Sat, 22 April 2017

Multiverses - difficult to grasp with a single brain, interesting thoughts, though. Nice render to depict the idea.

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jayfar

2:35AM | Sat, 22 April 2017

I like your image Magik but my feeble brain won't work around the theory !!!

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jmb007

5:06AM | Sat, 22 April 2017

bien

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VEDES

7:09AM | Sat, 22 April 2017

Excellent done!!!!!

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jendellas

8:55AM | Sat, 22 April 2017

Excellent!!!!

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sossy

9:35AM | Sat, 22 April 2017

very interesting and a fantastic picture 😀

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Glendaw

12:34PM | Sun, 23 April 2017

Aaaaa,mazing Sci-fi illustration and info, thanks for sharing Magik.

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DukeNukem2005

7:38AM | Mon, 24 April 2017

That's very beautiful!

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rajib

12:12PM | Mon, 08 May 2017

Thanks for the background on this. Nice work. Well, it would be interesting if we ever to find this to be real.


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