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The multiverse theory may be dressed up in scientific language, but in essence, it requires the same leap of faith. — Paul Davies, "A Brief History of the Multiverse", The New York Times George Ellis , writing in August 2011, provided a criticism of the multiverse, and pointed out that it is not a traditional scientific theory.
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.
M-theory is a theory in physics that unifies all consistent versions of superstring theory. Edward Witten first conjectured the existence of such a theory at a string theory conference at the University of Southern California in 1995. Witten's announcement initiated a flurry of research activity known as the second superstring revolution. Prior ...
A theory of everything (TOE), final theory, ultimate theory, unified field theory, or master theory is a singular, all-encompassing, coherent theoretical framework of physics that fully explains and links together all aspects of the universe. [1]: 6 Finding a theory of everything is one of the major unsolved problems in physics. [2] [3]
The authors of the book point out that a Unified Field Theory (a theory, based on an early model of the universe, proposed by Albert Einstein and other physicists) may not exist. [ 1 ] It argues that invoking God is not necessary to explain the origins of the universe, and that the Big Bang is a consequence of the laws of physics alone. [ 2 ]
The culmination that Tegmark seeks to lead us to is the "Level IV multiverse". This level contends that the Universe is not just well described by mathematics, but, in fact, is mathematics. All possible mathematical structures have a physical existence, and collectively, give a multiverse that subsumes all others.
A Theory of Everything will explain why the various features of the Universe must have exactly the values that have been recorded. The multiverse: Multiple universes exist, having all possible combinations of characteristics, and humans inevitably find themselves within a universe that allows us to exist.
Deutsch sees quantum superpositions and the Schrödinger equation as evidence for a many worlds quantum multiverse, where everything physically possible occurs in an infinite branching of alternate histories. Deutsch argues that a great deal of fiction is close to a fact somewhere in the multiverse. [4]