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A parallel universe, also known as an alternate universe, parallel world, parallel dimension, alternate reality, or alternative dimension, is a hypothetical universe co-existing with one's own, typically distinct in some way. [1] The sum of all potential parallel universes that constitute reality is often called the "multiverse".
A common feature of all four multiverse levels is that the simplest and arguably most elegant theory involves parallel universes by default. To deny the existence of those universes, one needs to complicate the theory by adding experimentally unsupported processes and ad hoc postulates: finite space, wave function collapse and ontological ...
During World War II the American atomic program completes the atomic bomb a year earlier than in reality, enabling it to be deployed against Germany and bring about a premature end to the war. 2018 My Real Children: Jo Walton: Presents a world where the protagonist has two, mutually incompatible memories of history.
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.
Parallel universes in fiction, a hypothetical self-contained plane of existence, co-existing with one's own; Alternate history, a genre of fiction in which historical events differ from reality; Alternative universe (fan fiction), fiction by fan authors that departs from the fictional universe of the source work
Part I (Chapters 1–4) covers the Big Bang, the early development of the Universe, and how these topics relate to the Eternal Inflation Multiverse (Level II in the Tegmark hierarchy of Multiverses). Part II (Chapters 5–9) covers M-Theory and the "Many-Worlds interpretation" of Quantum Mechanics (Level III Multiverse). It also discusses how ...
Alternate reality (or Alternative reality, UK English) often refers to parallel universes in fiction, a self-contained separate world, universe or reality coexisting with the real world, which is used as a recurring plot point or setting used in fantasy and science fiction. Alternate reality may also refer to:
The original Bizarro World was not a parallel Earth, but another planet that existed in the same universe as Earth-One. This was one of the proposed names for the post-Zero Hour DC Universe after a somewhat definitive timeline was established otimeline Action Comics #263 March 31 1960 was established [2] Infinite Crisis #6 (May 2006) Earth-One