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	Multiverse - Wikipedia, the free encyclopedia
		It is widely believed that Everett's interpretation considered as a formal theory is a conservative extension of standard quantum mechanics, that is, as far as results expressible in the language of ordinary quantum mechanics is concerned, it leads to no new results.
		Hugh Everett's many-worlds interpretation (MWI) is one of several mainstream interpretations of quantum mechanics.
		Additionally, possible worlds are a way of explaining probability, hypothetical statements and the like, and some philosophers such as David Lewis believe that all possible worlds actually exist (a position known as modal realism).
	en.wikipedia.org /wiki/Multiverse (2277 words)

	Everett's Relative-State Formulation of Quantum Mechanics
		Everett's proposal was to drop the collapse postulate from the standard formulation of quantum mechanics then deduce the empirical predictions of the standard theory as the subjective experiences of observers who are themselves treated as physical systems described by his theory.
		Everett then intended to deduce the standard statistical predictions of quantum mechanics (the predictions that depend on Rule 4b in the standard collapse formulation of quantum mechanics) as the subjective experiences of observers who are themselves treated as ordinary physical systems within the new theory.
		Everett's goal then was to show that the memory records of an observer as described by quantum mechanics without the collapse dynamics would somehow agree with those predicted by the standard formulation with the collapse dynamics.
	plato.stanford.edu /entries/qm-everett (6649 words)

	Many-Worlds Interpretation of Quantum Mechanics
		In this world, all objects which the sentient being perceives have definite states, but objects that are not under her observation might be in a superposition of different (classical) states.
		The Universe incorporates many worlds similar to the one the layman is familiar with.
		The MWI exhibits some kind of nonlocality: "world" is a nonlocal concept, but it avoids action at a distance and, therefore, it is not in conflict with the relativistic quantum mechanics; see discussions of nonlocality in Vaidman 1994, Tipler 2000, Bacciagaluppi 2002, and Hemmo and Pitowsky 2001.
	plato.stanford.edu /entries/qm-manyworlds (7042 words)

	The Everett Interpretation
		The norm of the vector of the set of worlds where experiments contradict the Born interpretation ("non-random" or "maverick" worlds) vanishes in the limit as the number of probabilistic trials goes to infinity, as is required by the frequentist definition of probability.
		Everett observed that it is the mouse that's split by its observation of the rest of the universe.
		Everett tended to speak in terms of the measuring apparatus being split by the measurement, into non-interfering states, without presenting a detailed analysis of why a measuring apparatus was so effective at destroying interference effects after a measurement, although the topics of orthogonality, amplification and irreversibility were covered.
	www.physics.wustl.edu /~alford/many_worlds_FAQ.html (16300 words)

	Many Worlds Interpretation of Quantum Mechanics [encyclopedia] (Site not responding. Last check: 2007-10-07)
		One interpretation of Quantum Mechanics does indeed state that there exist 'many worlds' (aka a multiverse), generally named after Hugh Everett III who proposed it.
		This FAQ does not seek to prove that the many-worlds interpretation is the "correct" quantum metatheory, merely to correct some of the common errors and misinformation on the subject floating around.
		The Many-Worlds Interpretation (MWI) is an approach to quantum mechanics according to which, in addition to the world we are aware of, there are many other similar worlds which exist in parallel at the same space and time.
	kosmoi.com /Science/Physics/Quantum/Bits/MWI (966 words)

	[No title]
		Everett saw it like this: the orthodox ontology treats measurement as a special kind of interaction, yet we know that measurement interactions cannot really be special since M devices are no different from anything else in the world.
		Everett's quantum theory without collapse describes the world as a continually proliferating jungle of conflicting possibilities, each isolated inside its own universe.
		Everett's many-worlds interpretation of quantum theory, despite its extravagant assumption of numerous unobservable parallel worlds, is a favorite model of physicists because of all quantum realities it alone seems to solve the measurement problem with no arbitrary canonization of the process of measurement.
	www.deoxy.org /irc/qr4.htm (1052 words)

	physics - Quantum mechanics
		The Everett many-worlds interpretation, formulated in 1956, holds that all the possibilities described by quantum theory simultaneously occur in a "multiverse" composed of mostly independent parallel universes.
		Based on this interpretation, Bohm has speculated that the ultimate nature of physical reality is not a collection of separate objects (as it appears to us), but rather an undivided whole that is in perpetual dynamic flux.
		The many worlds interpretation was formulated by Everett in 1956.
	www.physicsdaily.com /physics/Quantum_mechanics (3963 words)

	Quantum Theory of Immortality Menu
		The Everett 'Many Worlds Interpretation' of quantum physics postulates that that all systems evolve according to the Schrödinger equation, whereas the more conventional Copenhagen Interpretation says that this is true until the moment of observation, at which point the equation 'collapses'.
		The 'Copenhagen Interpretation' of the phenomena and the equations which describe them, agreed at the 1927 Solvay conference, essentially says that the 'wave packet' somehow associated with a particle 'collapses' when it is observed - this necessitates a relationship between the observer's consciousness and the particle.
		In interpretations where there is an explicit non-unitary collapse, she will be either dead or alive after the first trigger event, so she should expect to perceive perhaps a click or two (if she is moderately lucky), then "game over", nothing at all.
	www.higgo.com /quantum/qti.htm (1439 words)

	The Many-Worlds Interpretation of Quantum Mechanics (Site not responding. Last check: 2007-10-07)
		In perception worlds the states of all objects which the sentient being perceive are definite, but objects that currently are not under her observation might be in a superposition of different states.
		According to the definition of a world we have adopted, in each world the cat is in a definite state: either alive or dead and Schrödinger's experiment with the cat leads to the splitting of the worlds even before opening the box.
		In particular, there have been many attempts to derive the probability postulate from a weaker postulate according to which the probability is 0 for zero measure of existence and 1 when the measure of existence of other outcomes is zero.
	www.tau.ac.il /~vaidman/mwi/mwst1.html (6372 words)

	Many-Worlds Interpretation of Quantum Mechanics
		See Butterfield 2001 and Wallace 2001b for more arguments why a FAPP definition of a world ("branch" in their language) is enough.
		Indeed, in these experiments an interference of different worlds has to be observed.
		Weissman 1999 has proposed a modification of quantum theory with additional non-linear decoherence (and hence even more worlds than standard MWI), which can lead asymptotically to worlds of equal mean measure for different outcomes.
	setis.library.usyd.edu.au /stanford/entries/qm-manyworlds (7032 words)

	Alternate View Column AV-03
		This rival of the orthodox "Copenhagen" interpretation of the mathematics of quantum mechanics is the work of the well known theoretical physicist Professor John A. Wheeler and his PhD student Hugh Everett, III, both of whom were at Princeton University when the work was done.
		Many find it harder to swallow the multi-universe idea than to accept the collapse of the waves.
		But perhaps the most serious criticism of the Everett-Wheeler interpretation is that its predictions for the outcome of experiments do not differ from those of the orthodox Copenhagen interpretation.
	mist.npl.washington.edu /AV/altvw03.html (1762 words)

	The Everett Interpretation
		5)The norm of the collection of non-random worlds vanishes and therefore must be identified with some complex multiple of the null vector.
		) The interpretative elements are forced by the mathematical structure of the axioms of Hilbert space.
		Investigates and recasts the foundations of quantum theory in information theoretic terms, before moving on to consider the nature of interactions, observation, entropy, irreversible processes,classical objects etc. 138 pages.
	www.geocities.com /capecanaveral/hangar/6929/manyworld.html (15592 words)

	Homepage of David Wallace (Site not responding. Last check: 2007-10-07)
		My current research interests lie mostly in the philosophy of quantum mechanics.
		For the last few years I have been primarily interested in the Everett (Many-Worlds) interpretation of quantum theory, and in other interpretational issues linked to Everett (such as whether the Bohm theory is `Everett in denial', and what the ontology of the quantum state actually consists of).
		"Epistemology Quantised: circumstances in which we should come to believe in the Everett interpretation", in submission.
	users.ox.ac.uk /~mert0130 (302 words)

	Yury Semenov's Home Page
		World Wide GEB now is on M.Moshkov's Library site
		FAQ: The Many Worlds (Everett) Interpretation of Quantum Mechanics
		Is old people who worked in good faith many decades and today burrowed in garbage containers due to miserable superannuations an achievement of democracy and progress?
	zipper.paco.net /~yury (859 words)

	sciforums.com - Everett's Many-Worlds Interpretation
		When I imagine the multiple world interpretation I like to imagine it from a single particle's perspective, then you don't run into problems of "what if the universe stopped?"
		No further outcomes would occur within that null outcome.
		That's what the many worlds interpretation is all about, after all.
	www.sciforums.com /showthread.php?t=41587 (557 words)

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