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Many-worlds interpretation

Index Many-worlds interpretation

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. [1]

181 relations: Abdus Salam, Academic Press, Ad hoc, Adult Swim, Agnosticism, Albert Einstein, Allusion, Alternate history, Anathem, Andrei Linde, Andrew M. Gleason, Anthropic principle, Art, Artificial intelligence, Asher Peres, Basis (linear algebra), Big Bang, Bloch sphere, Born rule, Boundary value problem, Bra–ket notation, Brownian motion, Bryce DeWitt, Causality, Classical mechanics, Classical physics, Closed timelike curve, Conservation of energy, Consistent histories, Copenhagen interpretation, Cosmology, Counterfactual definiteness, CPT symmetry, David Deutsch, De Broglie–Bohm theory, Decision theory, Degrees of freedom (physics and chemistry), Determinism, Doctor of Philosophy, Double-slit experiment, Einselection, Elitzur–Vaidman bomb tester, EPR paradox, Erwin Schrödinger, Excited state, False vacuum, Falsifiability, Fine-tuned Universe, For Want of a Nail (novel), Foundations of Physics, ..., Frank J. Tipler, Gleason's theorem, H. Dieter Zeh, Hans Moravec, Harvard University Press, Harvey Brown (philosopher), Hidden variable theory, Hilbert space, Hugh Everett III, Indiana University Mathematics Journal, Infinity, Information theory, International Journal of Theoretical Physics, Interpretations of quantum mechanics, Ion, Ion trap, James Hartle, James P. Hogan (writer), Jeffrey A. Barrett, John Archibald Wheeler, John von Neumann, Julian Brown, Ken Campbell, Lev Vaidman, Linearity, Literature, Many-minds interpretation, Martin Gardner, Max Tegmark, Measurement in quantum mechanics, Metatheory, Michael Crichton, Michael Nielsen, Millisecond, Modal realism, Multiple histories, Multiverse, Murray Gell-Mann, Nanosecond, Nash equilibrium, Neal Stephenson, Netflix, New Scientist, Niels Bohr, Normed vector space, Novikov self-consistency principle, Objective collapse theory, Occam's razor, Olaf Stapledon, Orthonormality, Partial differential equation, Paul Davies, Paul Dirac, Perimeter Institute for Theoretical Physics, Phenomenalism, Philosophical realism, Philosophy, Photon, Physical cosmology, Physical paradox, Physical Review, Physics, Platonic realism, Pointer state, Positivism, Possible world, Princeton University, Princeton University Press, Principle of locality, Probability, Projection (linear algebra), Quantum, Quantum cosmology, Quantum decoherence, Quantum entanglement, Quantum eraser experiment, Quantum field theory, Quantum gravity, Quantum mechanics, Quantum potential, Quantum suicide and immortality, Quantum superposition, Quantum tunnelling, Quantum Zeno effect, Rabi cycle, Radioactive decay, Ray Streater, Reversible computing, Rick and Morty, Roger Penrose, Saratoga campaign, Schrödinger equation, Schrödinger's cat, Science fiction, Sean M. Carroll, Simultaneity, Spacetime, Special relativity, Stanford Encyclopedia of Philosophy, Star Maker, Star Trek, Star Trek: Deep Space Nine, Star Trek: The Next Generation, Star Trek: The Original Series, Stephen Hawking, Steven Weinberg, Stranger Things, String theory, The Beginning of Infinity, The Fabric of Reality, The Garden of Forking Paths, Theory, Theory of everything, Theory of relativity, Thought experiment, Time travel, Timeline (novel), Totalitarian principle, Uncountable set, Unitarity (physics), Universal wavefunction, Universe, Vacuum state, Victor J. Stenger, Wave function, Wave function collapse, Wave interference, Wave–particle duality, Werner Heisenberg, Wojciech H. Zurek, Zero-sum game. Expand index (131 more) »

Abdus Salam

Mohammad Abdus Salam Salam adopted the forename "Mohammad" in 1974 in response to the anti-Ahmadiyya decrees in Pakistan, similarly he grew his beard.

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Academic Press

Academic Press is an academic book publisher.

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Ad hoc

Ad hoc is a Latin phrase meaning literally "for this".

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Adult Swim

Adult Swim (stylized as and often shortened to) is the adult-oriented nighttime programming block of the American children's cable network Cartoon Network and programmed by William Street Productions.

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Agnosticism

Agnosticism is the view that the existence of God, of the divine or the supernatural is unknown or unknowable.

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Albert Einstein

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).

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Allusion

Allusion is a figure of speech, in which one refers covertly or indirectly to an object or circumstance from an external context.

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Alternate history

Alternate history or alternative history (Commonwealth English), sometimes abbreviated as AH, is a genre of fiction consisting of stories in which one or more historical events occur differently.

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Anathem

Anathem is a speculative fiction novel by Neal Stephenson, published in 2008.

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Andrei Linde

Andrei Dmitriyevich Linde (Андре́й Дми́триевич Ли́нде; born March 2, 1948) is a Russian-American theoretical physicist and the Harald Trap Friis Professor of Physics at Stanford University.

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Andrew M. Gleason

Andrew Mattei Gleason (19212008) was an American mathematician who as a young World War II naval officer broke German and Japanese military codes, then over the succeeding sixty years made fundamental contributions to widely varied areas of mathematics, including the solution of Hilbert's fifth problem, and was a leader in reform and innovation in teaching at all levels.

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Anthropic principle

The anthropic principle is a philosophical consideration that observations of the universe must be compatible with the conscious and sapient life that observes it.

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Art

Art is a diverse range of human activities in creating visual, auditory or performing artifacts (artworks), expressing the author's imaginative, conceptual idea, or technical skill, intended to be appreciated for their beauty or emotional power.

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Artificial intelligence

Artificial intelligence (AI, also machine intelligence, MI) is intelligence demonstrated by machines, in contrast to the natural intelligence (NI) displayed by humans and other animals.

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Asher Peres

Asher Peres (אשר פרס; January 30, 1934 – January 1, 2005) was an Israeli physicist, considered a pioneer in quantum information theory, as well as the connections between quantum mechanics and the theory of relativity.

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Basis (linear algebra)

In mathematics, a set of elements (vectors) in a vector space V is called a basis, or a set of, if the vectors are linearly independent and every vector in the vector space is a linear combination of this set.

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Big Bang

The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution.

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Bloch sphere

In quantum mechanics, the Bloch sphere is a geometrical representation of the pure state space of a two-level quantum mechanical system (qubit), named after the physicist Felix Bloch.

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Born rule

The Born rule (also called the Born law, Born's rule, or Born's law) formulated by German physicist Max Born in 1926, is a law of quantum mechanics giving the probability that a measurement on a quantum system will yield a given result.

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Boundary value problem

In mathematics, in the field of differential equations, a boundary value problem is a differential equation together with a set of additional constraints, called the boundary conditions.

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Bra–ket notation

In quantum mechanics, bra–ket notation is a standard notation for describing quantum states.

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Brownian motion

Brownian motion or pedesis (from πήδησις "leaping") is the random motion of particles suspended in a fluid (a liquid or a gas) resulting from their collision with the fast-moving molecules in the fluid.

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Bryce DeWitt

Bryce Seligman DeWitt (January 8, 1923 – September 23, 2004) was an American theoretical physicist who studied gravity and field theories.

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Causality

Causality (also referred to as causation, or cause and effect) is what connects one process (the cause) with another process or state (the effect), where the first is partly responsible for the second, and the second is partly dependent on the first.

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Classical mechanics

Classical mechanics describes the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars and galaxies.

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Classical physics

Classical physics refers to theories of physics that predate modern, more complete, or more widely applicable theories.

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Closed timelike curve

In mathematical physics, a closed timelike curve (CTC) is a world line in a Lorentzian manifold, of a material particle in spacetime that is "closed", returning to its starting point.

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Conservation of energy

In physics, the law of conservation of energy states that the total energy of an isolated system remains constant, it is said to be ''conserved'' over time.

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Consistent histories

In quantum mechanics, the consistent histories (also referred to as decoherent histories) approach is intended to give a modern interpretation of quantum mechanics, generalising the conventional Copenhagen interpretation and providing a natural interpretation of quantum cosmology.

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Copenhagen interpretation

The Copenhagen interpretation is an expression of the meaning of quantum mechanics that was largely devised in the years 1925 to 1927 by Niels Bohr and Werner Heisenberg.

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Cosmology

Cosmology (from the Greek κόσμος, kosmos "world" and -λογία, -logia "study of") is the study of the origin, evolution, and eventual fate of the universe.

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Counterfactual definiteness

In quantum mechanics, counterfactual definiteness (CFD) is the ability to speak "meaningfully" of the definiteness of the results of measurements that have not been performed (i.e., the ability to assume the existence of objects, and properties of objects, even when they have not been measured).

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CPT symmetry

Charge, parity, and time reversal symmetry is a fundamental symmetry of physical laws under the simultaneous transformations of charge conjugation (C), parity transformation (P), and time reversal (T).

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David Deutsch

David Elieser Deutsch (born 18 May 1953) is an Israeli-born British physicist at the University of Oxford.

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De Broglie–Bohm theory

The de Broglie–Bohm theory, also known as the pilot wave theory, Bohmian mechanics, Bohm's interpretation, and the causal interpretation, is an interpretation of quantum mechanics.

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Decision theory

Decision theory (or the theory of choice) is the study of the reasoning underlying an agent's choices.

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Degrees of freedom (physics and chemistry)

In physics, a degree of freedom is an independent physical parameter in the formal description of the state of a physical system.

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Determinism

Determinism is the philosophical theory that all events, including moral choices, are completely determined by previously existing causes.

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Doctor of Philosophy

A Doctor of Philosophy (PhD or Ph.D.; Latin Philosophiae doctor) is the highest academic degree awarded by universities in most countries.

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Double-slit experiment

In modern physics, the double-slit experiment is a demonstration that light and matter can display characteristics of both classically defined waves and particles; moreover, it displays the fundamentally probabilistic nature of quantum mechanical phenomena.

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Einselection

In quantum mechanics, einselection, short for environment-induced superselection, is a name coined by Wojciech H. Zurek for a process which is claimed to explain the appearance of wavefunction collapse and the emergence of classical descriptions of reality from quantum descriptions.

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Elitzur–Vaidman bomb tester

The Elitzur–Vaidman bomb-tester is a quantum mechanics thought experiment that uses interaction-free measurements to verify that a bomb is functional without having to detonate it.

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EPR paradox

The Einstein–Podolsky–Rosen paradox or the EPR paradox of 1935 is a thought experiment in quantum mechanics with which Albert Einstein and his colleagues Boris Podolsky and Nathan Rosen (EPR) claimed to demonstrate that the wave function does not provide a complete description of physical reality, and hence that the Copenhagen interpretation is unsatisfactory; resolutions of the paradox have important implications for the interpretation of quantum mechanics.

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Erwin Schrödinger

Erwin Rudolf Josef Alexander Schrödinger (12 August 1887 – 4 January 1961), sometimes written as or, was a Nobel Prize-winning Austrian physicist who developed a number of fundamental results in the field of quantum theory, which formed the basis of wave mechanics: he formulated the wave equation (stationary and time-dependent Schrödinger equation) and revealed the identity of his development of the formalism and matrix mechanics.

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Excited state

In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state (that is, more energy than the absolute minimum).

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False vacuum

In quantum field theory, a false vacuum is a hypothetical vacuum that is somewhat, but not entirely, stable.

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Falsifiability

A statement, hypothesis, or theory has falsifiability (or is falsifiable) if it can logically be proven false by contradicting it with a basic statement.

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Fine-tuned Universe

The fine-tuned Universe is the proposition that the conditions that allow life in the Universe can occur only when certain universal dimensionless physical constants lie within a very narrow range of values, so that if any of several fundamental constants were only slightly different, the Universe would be unlikely to be conducive to the establishment and development of matter, astronomical structures, elemental diversity, or life as it is understood.

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For Want of a Nail (novel)

For Want of a Nail: If Burgoyne Had Won at Saratoga is an alternate history novel published in 1973 by the American business historian Robert Sobel.

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Foundations of Physics

Foundations of Physics is a monthly journal "devoted to the conceptual bases and fundamental theories of modern physics and cosmology, emphasizing the logical, methodological, and philosophical premises of modern physical theories and procedures".

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Frank J. Tipler

Frank Jennings Tipler (born February 1, 1947) is an American mathematical physicist and cosmologist, holding a joint appointment in the Departments of Mathematics and Physics at Tulane University.

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Gleason's theorem

Gleason's theorem (named after Andrew M. Gleason) is a mathematical result which shows that the rule one uses to calculate probabilities in quantum physics follows logically from particular assumptions about how measurements are represented mathematically.

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H. Dieter Zeh

Heinz-Dieter Zeh (born 8 May 1932 in Braunschweig, Germany; died 15 April 2018 while on holiday in the Black Forest), usually referred to as H. Dieter Zeh, was a professor (later professor emeritus) of the University of Heidelberg and theoretical physicist.

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Hans Moravec

Hans Peter Moravec (born November 30, 1948, Kautzen, Austria) is an adjunct faculty member at the Robotics Institute of Carnegie Mellon University.

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Harvard University Press

Harvard University Press (HUP) is a publishing house established on January 13, 1913, as a division of Harvard University, and focused on academic publishing.

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Harvey Brown (philosopher)

Harvey R. Brown, FBA (born April 4, 1950 in the United Kingdom) is a philosopher of physics.

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Hidden variable theory

In physics, hidden variable theories are held by some physicists who argue that the state of a physical system, as formulated by quantum mechanics, does not give a complete description for the system; i.e., that quantum mechanics is ultimately incomplete, and that a complete theory would provide descriptive categories to account for all observable behavior and thus avoid any indeterminism.

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Hilbert space

The mathematical concept of a Hilbert space, named after David Hilbert, generalizes the notion of Euclidean space.

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Hugh Everett III

Hugh Everett III (November 11, 1930 – July 19, 1982) was an American physicist who first proposed the many-worlds interpretation (MWI) of quantum physics, which he termed his "relative state" formulation.

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Indiana University Mathematics Journal

The Indiana University Mathematics Journal is a journal of mathematics published by Indiana University.

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Infinity

Infinity (symbol) is a concept describing something without any bound or larger than any natural number.

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Information theory

Information theory studies the quantification, storage, and communication of information.

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International Journal of Theoretical Physics

The International Journal of Theoretical Physics is a peer-reviewed scientific journal of physics published by Springer Science+Business Media since 1968.

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Interpretations of quantum mechanics

An interpretation of quantum mechanics is an attempt to explain how concepts in quantum mechanics correspond to reality.

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Ion

An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).

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Ion trap

An ion trap is a combination of electric or magnetic fields used to capture charged particles, often in a system isolated from an external environment.

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James Hartle

James Burkett Hartle (August 20, 1939) is an American physicist.

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James P. Hogan (writer)

James Patrick Hogan (27 June 1941 – 12 July 2010) was a British science fiction author.

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Jeffrey A. Barrett

Jeffrey A. Barrett is Chancellor's Professor in Logic and Philosophy of Science at the University of California, Irvine.

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John Archibald Wheeler

John Archibald Wheeler (July 9, 1911 – April 13, 2008) was an American theoretical physicist.

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John von Neumann

John von Neumann (Neumann János Lajos,; December 28, 1903 – February 8, 1957) was a Hungarian-American mathematician, physicist, computer scientist, and polymath.

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Julian Brown

Julian Brown was born in 1974 and lives and works in London.

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Ken Campbell

Kenneth Victor Campbell (10 December 1941 – 31 August 2008) was an English writer, actor, director and comedian known for his work in experimental theatre.

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Lev Vaidman

Lev Vaidman (born 4 September 1955) is a Russian-Israeli physicist and Professor at Tel Aviv University, Israel.

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Linearity

Linearity is the property of a mathematical relationship or function which means that it can be graphically represented as a straight line.

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Literature

Literature, most generically, is any body of written works.

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Many-minds interpretation

The many-minds interpretation of quantum mechanics extends the many-worlds interpretation by proposing that the distinction between worlds should be made at the level of the mind of an individual observer.

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Martin Gardner

Martin Gardner (October 21, 1914May 22, 2010) was an American popular mathematics and popular science writer, with interests also encompassing scientific skepticism, micromagic, philosophy, religion, and literature—especially the writings of Lewis Carroll, L. Frank Baum, and G. K. Chesterton.

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Max Tegmark

Max Erik Tegmark (born Max Shapiro 5 May 1967) is a Swedish-American physicist and cosmologist.

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Measurement in quantum mechanics

The framework of quantum mechanics requires a careful definition of measurement.

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Metatheory

A metatheory or meta-theory is a theory whose subject matter is some theory.

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Michael Crichton

John Michael Crichton (October 23, 1942 – November 4, 2008) was an American author, screenwriter, film director and producer best known for his work in the science fiction, thriller, and medical fiction genres.

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Michael Nielsen

Michael Aaron Nielsen (born January 4, 1974) is a quantum physicist, science writer, and computer programming researcher living in San Francisco.

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Millisecond

A millisecond (from milli- and second; symbol: ms) is a thousandth (0.001 or 10−3 or 1/1000) of a second.

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Modal realism

Modal realism is the view propounded by David Kellogg Lewis that all possible worlds are real in the same way as is the actual world: they are "of a kind with this world of ours." It is based on the following tenets: possible worlds exist; possible worlds are not different in kind from the actual world; possible worlds are irreducible entities; the term actual in actual world is indexical, i.e. any subject can declare their world to be the actual one, much as they label the place they are "here" and the time they are "now".

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Multiple histories

The concept of multiple histories is closely related to the many-worlds interpretation of quantum mechanics.

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Multiverse

The multiverse (or meta-universe) is a hypothetical group of multiple separate universes including the universe in which humans live.

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Murray Gell-Mann

Murray Gell-Mann (born September 15, 1929) is an American physicist who received the 1969 Nobel Prize in physics for his work on the theory of elementary particles.

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Nanosecond

A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, 1/1,000,000,000 of a second, or 10 seconds.

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Nash equilibrium

In game theory, the Nash equilibrium, named after American mathematician John Forbes Nash Jr., is a solution concept of a non-cooperative game involving two or more players in which each player is assumed to know the equilibrium strategies of the other players, and no player has anything to gain by changing only their own strategy.

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Neal Stephenson

Neal Town Stephenson (born October 31, 1959) is an American writer and game designer known for his works of speculative fiction.

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Netflix

Netflix, Inc. is an American over-the-top media services provider, headquartered in Los Gatos, California.

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New Scientist

New Scientist, first published on 22 November 1956, is a weekly, English-language magazine that covers all aspects of science and technology.

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Niels Bohr

Niels Henrik David Bohr (7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922.

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Normed vector space

In mathematics, a normed vector space is a vector space over the real or complex numbers, on which a norm is defined.

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Novikov self-consistency principle

The Novikov self-consistency principle, also known as the Novikov self-consistency conjecture and Larry Niven's law of conservation of history, is a principle developed by Russian physicist Igor Dmitriyevich Novikov in the mid-1980s.

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Objective collapse theory

Objective collapse theories, also known as quantum mechanical spontaneous localization models (QMSL), are an approach to the interpretational problems of quantum mechanics.

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Occam's razor

Occam's razor (also Ockham's razor or Ocham's razor; Latin: lex parsimoniae "law of parsimony") is the problem-solving principle that, the simplest explanation tends to be the right one.

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Olaf Stapledon

William Olaf Stapledon (10 May 1886 – 6 September 1950) – known as Olaf Stapledon – was a British philosopher and author of science fiction.

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Orthonormality

In linear algebra, two vectors in an inner product space are orthonormal if they are orthogonal and unit vectors.

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Partial differential equation

In mathematics, a partial differential equation (PDE) is a differential equation that contains unknown multivariable functions and their partial derivatives.

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Paul Davies

Paul Charles William Davies, AM (born 22 April 1946) is an English physicist, writer and broadcaster, a professor at Arizona State University as well as the Director of BEYOND: Center for Fundamental Concepts in Science.

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Paul Dirac

Paul Adrien Maurice Dirac (8 August 1902 – 20 October 1984) was an English theoretical physicist who is regarded as one of the most significant physicists of the 20th century.

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Perimeter Institute for Theoretical Physics

Perimeter Institute for Theoretical Physics (PI, Perimeter, PITP) is an independent research centre in foundational theoretical physics located in Waterloo, Ontario, Canada.

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Phenomenalism

Phenomenalism is the view that physical objects cannot justifiably be said to exist in themselves, but only as perceptual phenomena or sensory stimuli (e.g. redness, hardness, softness, sweetness, etc.) situated in time and in space.

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Philosophical realism

Realism (in philosophy) about a given object is the view that this object exists in reality independently of our conceptual scheme.

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Philosophy

Philosophy (from Greek φιλοσοφία, philosophia, literally "love of wisdom") is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, mind, and language.

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Photon

The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles).

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Physical cosmology

Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate.

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Physical paradox

A physical paradox is an apparent contradiction in physical descriptions of the universe.

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Physical Review

Physical Review is an American peer-reviewed scientific journal established in 1893 by Edward Nichols.

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Physics

Physics (from knowledge of nature, from φύσις phýsis "nature") is the natural science that studies matterAt the start of The Feynman Lectures on Physics, Richard Feynman offers the atomic hypothesis as the single most prolific scientific concept: "If, in some cataclysm, all scientific knowledge were to be destroyed one sentence what statement would contain the most information in the fewest words? I believe it is that all things are made up of atoms – little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another..." and its motion and behavior through space and time and that studies the related entities of energy and force."Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves."Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physics. (...) You will come to see physics as a towering achievement of the human intellect in its quest to understand our world and ourselves."Physics is an experimental science. Physicists observe the phenomena of nature and try to find patterns that relate these phenomena.""Physics is the study of your world and the world and universe around you." Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps the oldest. Over the last two millennia, physics, chemistry, biology, and certain branches of mathematics were a part of natural philosophy, but during the scientific revolution in the 17th century, these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy. Advances in physics often enable advances in new technologies. For example, advances in the understanding of electromagnetism and nuclear physics led directly to the development of new products that have dramatically transformed modern-day society, such as television, computers, domestic appliances, and nuclear weapons; advances in thermodynamics led to the development of industrialization; and advances in mechanics inspired the development of calculus.

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Platonic realism

Platonic realism is a philosophical term usually used to refer to the idea of realism regarding the existence of universals or abstract objects after the Greek philosopher Plato (c. 427–c. 347 BC), a student of Socrates.

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Pointer state

In quantum Darwinism and similar theories, pointer states are quantum states that are less perturbed by decoherence than other states, and are the quantum equivalents of the classical states of the system after decoherence has occurred through interaction with the environment.

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Positivism

Positivism is a philosophical theory stating that certain ("positive") knowledge is based on natural phenomena and their properties and relations.

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Possible world

In philosophy and logic, the concept of a possible world is used to express modal claims.

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Princeton University

Princeton University is a private Ivy League research university in Princeton, New Jersey.

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Princeton University Press

Princeton University Press is an independent publisher with close connections to Princeton University.

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Principle of locality

In physics, the principle of locality states that an object is only directly influenced by its immediate surroundings.

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Probability

Probability is the measure of the likelihood that an event will occur.

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Projection (linear algebra)

In linear algebra and functional analysis, a projection is a linear transformation P from a vector space to itself such that.

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Quantum

In physics, a quantum (plural: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction.

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Quantum cosmology

Quantum cosmology is the attempt in theoretical physics to develop a quantum theory of the Universe.

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Quantum decoherence

Quantum decoherence is the loss of quantum coherence.

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Quantum entanglement

Quantum entanglement is a physical phenomenon which occurs when pairs or groups of particles are generated, interact, or share spatial proximity in ways such that the quantum state of each particle cannot be described independently of the state of the other(s), even when the particles are separated by a large distance—instead, a quantum state must be described for the system as a whole.

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Quantum eraser experiment

In quantum mechanics, the quantum eraser experiment is an interferometer experiment that demonstrates several fundamental aspects of quantum mechanics, including quantum entanglement and complementarity.

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Quantum field theory

In theoretical physics, quantum field theory (QFT) is the theoretical framework for constructing quantum mechanical models of subatomic particles in particle physics and quasiparticles in condensed matter physics.

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Quantum gravity

Quantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics, and where quantum effects cannot be ignored, such as near compact astrophysical objects where the effects of gravity are strong.

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Quantum mechanics

Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

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Quantum potential

The quantum potential or quantum potentiality is a central concept of the de Broglie–Bohm formulation of quantum mechanics, introduced by David Bohm in 1952.

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Quantum suicide and immortality

In quantum mechanics, quantum suicide is a thought experiment, originally published independently by Hans Moravec in 1987 (If MWI is true, apocalyptic particle accelerators won't function as advertised).

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Quantum superposition

Quantum superposition is a fundamental principle of quantum mechanics.

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Quantum tunnelling

Quantum tunnelling or tunneling (see spelling differences) is the quantum mechanical phenomenon where a particle tunnels through a barrier that it classically cannot surmount.

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Quantum Zeno effect

The quantum Zeno effect (also known as the Turing paradox) is a feature of quantum mechanical systems allowing a particle's time evolution to be arrested by measuring it frequently enough with respect to some chosen measurement setting.

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Rabi cycle

In physics, the Rabi cycle (or Rabi flop) is the cyclic behaviour of a two-level quantum system in the presence of an oscillatory driving field.

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Radioactive decay

Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.

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Ray Streater

Raymond Frederick "Ray" Streater (born 1936) is a British physicist, and professor emeritus of Applied Mathematics at King's College London.

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Reversible computing

Reversible computing is a model of computing where the computational process to some extent is reversible, i.e., time-invertible.

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Rick and Morty

Rick and Morty is an American adult animated science fiction adventure comedy series created by Justin Roiland and Dan Harmon for Cartoon Network's late-night programming block Adult Swim.

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Roger Penrose

Sir Roger Penrose (born 8 August 1931) is an English mathematical physicist, mathematician and philosopher of science.

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Saratoga campaign

The Saratoga Campaign in 1777 was an attempt by the British high command for North America to gain military control of the strategically important Hudson River valley during the American Revolutionary War.

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Schrödinger equation

In quantum mechanics, the Schrödinger equation is a mathematical equation that describes the changes over time of a physical system in which quantum effects, such as wave–particle duality, are significant.

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Schrödinger's cat

Schrödinger's cat is a thought experiment, sometimes described as a paradox, devised by Austrian physicist Erwin Schrödinger in 1935.

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Science fiction

Science fiction (often shortened to Sci-Fi or SF) is a genre of speculative fiction, typically dealing with imaginative concepts such as advanced science and technology, spaceflight, time travel, and extraterrestrial life.

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Sean M. Carroll

Sean Michael Carroll (born October 5, 1966) is a cosmologist and physics professor specializing in dark energy and general relativity.

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Simultaneity

Simultaneity is the relation between two events assumed to be happening at the same time in a frame of reference.

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Spacetime

In physics, spacetime is any mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum.

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Special relativity

In physics, special relativity (SR, also known as the special theory of relativity or STR) is the generally accepted and experimentally well-confirmed physical theory regarding the relationship between space and time.

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Stanford Encyclopedia of Philosophy

The Stanford Encyclopedia of Philosophy (SEP) combines an online encyclopedia of philosophy with peer-reviewed publication of original papers in philosophy, freely accessible to Internet users.

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Star Maker

Star Maker is a science fiction novel by British writer Olaf Stapledon, published in 1937.

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Star Trek

Star Trek is an American media franchise based on the science fiction television series created by Gene Roddenberry.

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Star Trek: Deep Space Nine

Star Trek: Deep Space Nine (sometimes abbreviated to DS9) is a science fiction television series set in the Star Trek universe in the Milky Way galaxy, in the years 2369–2375.

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Star Trek: The Next Generation

Star Trek: The Next Generation (abbreviated as TNG and ST:TNG) is an American science-fiction television series in the Star Trek franchise created by Gene Roddenberry that ran from 1987 to 1994.

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Star Trek: The Original Series

Star Trek is an American science fiction television series created by Gene Roddenberry that follows the adventures of the starship and its crew.

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Stephen Hawking

Stephen William Hawking (8 January 1942 – 14 March 2018) was an English theoretical physicist, cosmologist, and author, who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge at the time of his death.

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Steven Weinberg

Steven Weinberg (born May 3, 1933) is an American theoretical physicist and Nobel laureate in Physics for his contributions with Abdus Salam and Sheldon Glashow to the unification of the weak force and electromagnetic interaction between elementary particles.

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Stranger Things

Stranger Things is an American science fiction-horror web television series created, written, and directed by the Duffer Brothers.

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String theory

In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings.

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The Beginning of Infinity

The Beginning of Infinity: Explanations that Transform the World is a popular science book by the physicist David Deutsch first published in 2011.

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The Fabric of Reality

The Fabric of Reality is a 1997 book by the physicist David Deutsch.

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The Garden of Forking Paths

"The Garden of Forking Paths" (original Spanish title: "El jardín de senderos que se bifurcan") is a 1941 short story by Argentine writer and poet Jorge Luis Borges.

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Theory

A theory is a contemplative and rational type of abstract or generalizing thinking, or the results of such thinking.

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Theory of everything

A theory of everything (ToE), final theory, ultimate theory, or master theory is a hypothetical single, all-encompassing, coherent theoretical framework of physics that fully explains and links together all physical aspects of the universe.

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Theory of relativity

The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity.

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Thought experiment

A thought experiment (Gedankenexperiment, Gedanken-Experiment or Gedankenerfahrung) considers some hypothesis, theory, or principle for the purpose of thinking through its consequences.

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Time travel

Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically using a hypothetical device known as a time machine.

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Timeline (novel)

Timeline is a science fiction novel by American writer Michael Crichton, published in November 1999.

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Totalitarian principle

In quantum mechanics, Gell-Mann's totalitarian principle states: "Everything not forbidden is compulsory."See footnote on p. 859 in Physicist Murray Gell-Mann borrowed this expression from T. H. White's The Once and Future King to describe the state of particle physics around the time he was formulating the Eightfold Way, a precursor to the quark-model of hadrons.

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Uncountable set

In mathematics, an uncountable set (or uncountably infinite set) is an infinite set that contains too many elements to be countable.

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Unitarity (physics)

In quantum physics, unitarity is a restriction on the allowed evolution of quantum systems that ensures the sum of probabilities of all possible outcomes of any event always equals 1.

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Universal wavefunction

The universal wavefunction (or wave function) is a term introduced by Hugh Everett in his PhD thesis The Theory of the Universal Wave Function, and forms a core concept in the relative state interpretationHugh Everett, Relative State Formulation of Quantum Mechanics, Reviews of Modern Physics vol 29, (1957) pp 454–462.

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Universe

The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.

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Vacuum state

In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy.

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Victor J. Stenger

Victor John Stenger (January 29, 1935 – August 25, 2014) was an American particle physicist, philosopher, author, and religious skeptic.

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Wave function

A wave function in quantum physics is a mathematical description of the quantum state of an isolated quantum system.

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Wave function collapse

In quantum mechanics, wave function collapse is said to occur when a wave function—initially in a superposition of several eigenstates—appears to reduce to a single eigenstate (by "observation").

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Wave interference

In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude.

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Wave–particle duality

Wave–particle duality is the concept in quantum mechanics that every particle or quantic entity may be partly described in terms not only of particles, but also of waves.

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Werner Heisenberg

Werner Karl Heisenberg (5 December 1901 – 1 February 1976) was a German theoretical physicist and one of the key pioneers of quantum mechanics.

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Wojciech H. Zurek

Wojciech Hubert Żurek (born 1951) is a Polish-born naturalized American theoretical physicist and a leading authority on quantum theory, especially decoherence and non-equilibrium dynamics of symmetry breaking and resulting defect generation (known as the Kibble-Zurek mechanism).

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Zero-sum game

In game theory and economic theory, a zero-sum game is a mathematical representation of a situation in which each participant's gain or loss of utility is exactly balanced by the losses or gains of the utility of the other participants.

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References

[1] https://en.wikipedia.org/wiki/Many-worlds_interpretation

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