Everett many-worlds interpretation | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-15

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Many-worlds_interpretation


00:02:48 1 Origin
00:03:28 2 Outline
00:08:57 3 Interpreting wavefunction collapse
00:12:34 4 The unreal/real interpretation
00:15:31 4.1 Similarities with the de Broglie–Bohm interpretation
00:18:42 4.2 Probability
00:19:12 4.3 Frequency-based approaches
00:20:35 4.4 Decision theory
00:21:59 4.5 Symmetries and invariance
00:22:49 5 MWI overview
00:25:28 5.1 Relative state
00:29:16 5.2 Properties of the theory
00:31:03 5.3 Comparative properties and possible experimental tests
00:33:07 5.4 Copenhagen interpretation
00:33:41 5.5 The universe decaying to a new vacuum state
00:34:40 5.6 Many-minds
00:35:08 6 Common objections
00:45:51 7 Reception
00:49:57 7.1 Polls
00:53:12 8 Speculative implications
00:53:30 8.1 Quantum suicide thought experiment
00:54:20 8.2 Weak coupling
00:59:09 8.3 Absurd or highly improbable timelines
01:01:17 8.4 Similarity to modal realism
01:02:09 8.5 Time travel
01:02:53 9 See also
01:03:02 10 Notes
01:03:11 11 Further reading
01:07:15 12 External links



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SUMMARY
=======
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. The existence of the other worlds makes it possible to remove randomness and action at a distance from quantum theory and thus from all physics. 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,  multiverse theory 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 historical 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".