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quantum theory
quantum field theory
quantum field theory study of the quantum mechanical interaction of elementary particles and fields . Quantum field theory applied to the understanding of electromagnetism is called quantum electrodynamics (QED), and it has proved spectacularly successful in describing the interaction of light with matter. The calculations, however, are often complex. They are usually carried out with the aid of Feynman diagrams (named after American physicist Richard P. Feynman ), simple graphs that represent possible variations of interactions and provide an elegant shorthand for precise mathematical equations. Quantum field theory applied to the understanding of the strong interactions between quarks and between protons , neutrons , and other baryons and mesons is called quantum chromodynamics (QCD); QCD has a mathematical structure similar to that of QED.
Bibliography: See R. P. Feynman, QED (1985); F. J. Yndurain, The Theory of Quark and Gluon Interactions (1993).
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The quantum classical theory.(Book Review)
Magazine article from: Chemistry and Industry; 10/6/2003; ; 700+ words
; ...514619 0 How can one visualise quantum mechanics? This is a question...linking classical and quantum theories might provide a starting point...that enigmatic title: The quantum classical theory. However, the intention...new light on old topics in quantum theory, but to use ...
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Peaches Geldof speaks of interest in quantum theories
News Wire article from: The Hindustan Times; 10/29/2009; 330 words
; ...expressed her interest in quantum theories. Geldof, 20, who claims...intrigued by? Stephen Hawking's theories and Richard Dawkins' theory. That's what I care about...really interested in quantum theories and how we came to be and...
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Faith and quantum theory.
Magazine article from: First Things: A Monthly Journal of Religion and Public Life; 3/1/2007; ; 700+ words
; ...There is a flood of such quantum flapdoodle (as the physicist...many authors who claim that quantum theory has implications favorable...chunks, which he called quanta. In other words, light...particle duality. Their quantum theory has been spectacularly successful...understanding of ...
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Putting quantum theory to a nuclear test.
Magazine article from: Science News; 9/16/1989; ; 700+ words
; Putting quantum theory to a nuclear test Quantum mechanics, the preeminent theory...probably good to be able to test the theory for systems other than just nuclei...say that the sky is falling and quantum mechanics is on its way out...
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Executing Schrodinger's cat.(quantum theory)
Magazine article from: Popular Mechanics; 10/1/1997; ; 700+ words
; ...cat to illustrate the dilemma of quantum theory was presented by Erwin Schrodinger...required by the mathematics that gave quantum theory its ability to perfectly predict...state required by the rules of quantum theory exists for only a very brief time...
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 "The Economist (US)")
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Just thanck Planck; Quantum theory's centenary.(Science and Technology)(Quantum theory is about to celebrate its centenary)(Max Planck)
Magazine article from: The Economist (US); 12/9/2000; 700+ words
; ...invent the notion of the quantum. At the time, the...packets of energy-the quanta after which the theory is named-seemed preposterous...looking for evidence of quanta, however, they found...time, Planck saw his quanta as a mere mathematical...to be confounded by quantum mechanics, he ...
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Quantum Games.(game theory applied to quantum mechanics)
Magazine article from: Science News; 11/20/1999; ; 700+ words
; Taking advantage of quantum effects to attain a winning...for a winning strategy. Game theory offers mathematical tools for...from the domain of physics and quantum mechanics, which governs the...to exploit peculiarities of quantum behavior to work out novel...
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Entangled states and quantum causality threshold in the general theory of relativity.
Magazine article from: Progress in Physics; 7/1/2005; ; 700+ words
; ...We call this specific state Quantum Causality Threshold. 1 Disentangled...anniversary of the discovery of quanta, Belavkin [1] generalizes definitions assumed de facto in Quantum Mechanics for entangled and...distinction of the classical theory from quantum is that the prior mixed states...
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Quantum Theory: Reconsideration of Foundations-3.(by Guillaume Adenier)(Brief Article)(Book Review)
Magazine article from: SciTech Book News; 3/1/2006; 557 words
; 0735403015 Quantum theory; reconsideration of foundations--3; proceedings. International conference Quantum Theory; Reconsideration of Foundations...conference dedicated to the foundations of quantum mechanics and its applications to quantum...
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Ricci flow and quantum theory.(Report)
Magazine article from: Progress in Physics; 1/1/2008; ; 700+ words
; ...between Weyl geometry and the quantum potential, between conformal...relativity (GR) and Dirac-Weyl theory, and between Ricci flow and the quantum potential. We would now like...Weyl-Schrodinger picture of quantum evolution based on [42, 43...
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quantum theory
Book article from: The Columbia Encyclopedia, Sixth Edition
...According to the quantum theory, energy is held to...of energy, called a quantum (pl. quanta), thus behaves in...by that atom. The quantum theory shows that those frequencies...energies of the light quanta, or photons , and...
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Quantum Theory and Mechanics
Book article from: World of Earth Science
...energy termed quanta. This quantum concept seemed counter...Advancements associated with quantum mechanics (e.g., the...bundles of energy termed quanta. The concept that energy...Regardless, Planck's quantum theory, that also asserted...frequency, proved a powerful theory that ...
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Quantum Theory
Encyclopedia entry from: Encyclopedia of Science and Religion
Quantum Theory See
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Quantum Field Theory
Encyclopedia entry from: Encyclopedia of Science and Religion
Quantum Field Theory Quantum field theory is obtained by combining...matter. However, such theories were known to possess...paradoxes of quantum field theories and are a promising candidate for a complete theory of all elementary particles...
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quantum field theory
Book article from: The Columbia Encyclopedia, Sixth Edition
quantum field theory study of the quantum mechanical interaction of elementary particles and fields . Quantum field theory applied to the understanding of electromagnetism...
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