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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.
Hugh Everett III (/ ˈ ɛ v ər ɪ t /; November 11, 1930 – July 19, 1982) was an American physicist who, in his 1957 PhD thesis, proposed what is now known as the many-worlds interpretation (MWI) of quantum mechanics.
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 ...
The concept of universal wavefunction was introduced by Hugh Everett in his 1956 PhD thesis draft The Theory of the Universal Wave Function. [8] It later received investigation from James Hartle and Stephen Hawking [9] who derived the Hartle–Hawking solution to the Wheeler–deWitt equation to explain the initial conditions of the Big Bang ...
The definition of quantum theorists' terms, such as wave function and matrix mechanics, progressed through many stages.For instance, Erwin Schrödinger originally viewed the electron's wave function as its charge density smeared across space, but Max Born reinterpreted the absolute square value of the wave function as the electron's probability density distributed across space; [3]: 24–33 ...
Schrödinger's cat in the many-worlds interpretation, where a branching of the universe occurs through a superposition of two quantum mechanical states. Hugh Everett III's many-worlds interpretation (MWI) is one of several mainstream interpretations of quantum mechanics. In brief, one aspect of quantum mechanics is that certain observations ...
Parallel Worlds, Parallel Lives is a BAFTA-winning [3] television documentary broadcast in 2007 on BBC Scotland and BBC Four, in which American rock musician Mark Oliver Everett talks with physicists and the former colleagues of his father—Hugh Everett—about his father's many-worlds interpretation of quantum mechanics.
DeWitt formulated the Wheeler–DeWitt equation for the wave function of the universe with John Archibald Wheeler and advanced the formulation of Hugh Everett's many-worlds interpretation of quantum mechanics. [1] With his student Larry Smarr, he originated the field of numerical relativity. [8]: 25–35, 37