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quantum theory

Overview page. Subjects: Science and Mathematics.

A theory of physics in which energy exists only in discrete quantities, called quanta. It was originated in 1900 by the German physicist Max Karl Ernst Ludwig Planck (1858–1947), who...

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Quantum Theory

Nicholas Maxwell.

in The Comprehensibility of the Universe

January 2003; p ublished online October 2011 .

Chapter. Subjects: Philosophy of Science. 10788 words.

This chapter first examines the four ways in which quantum theory poses a challenge for aim-oriented empiricism. It then enumerates the six defects of the orthodox quantum theory. It also...

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Quantum Theory

in The Oxford Encyclopedia of the History of American Science, Medicine, and Technology

January 2014; p ublished online January 2015 .

Reference Entry. Subjects: History of Science and Technology. 1135 words.

Quantum physics had its start in 1900 with Max Planck’s theory of heat radiation, which eventually was transformed into a

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Quantum Theory

Frank S. Levin.

in Surfing the Quantum World

September 2017; p ublished online November 2017 .

Chapter. Subjects: Astronomy and Astrophysics. 7144 words.

The subject of Chapter 8 is the fundamental principles of quantum theory, the abstract extension of quantum mechanics. Two of the entities explored are kets and operators, with kets being...

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Quantum Theory

Jochen Rau.

in Statistical Physics and Thermodynamics

September 2017; p ublished online November 2017 .

Chapter. Subjects: Mathematical and Statistical Physics. 7476 words.

From the outset statistical mechanics will be framed in the language of quantum theory. The typical macroscopic system is composed of multiple constituents, and hence described in some...

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quantum theory

Overview page. Subjects: Science and Mathematics.

A theory of physics in which energy exists only in discrete quantities, called quanta. It was originated in 1900 by the German physicist Max Karl Ernst Ludwig Planck (1858–1947), who...

See overview in Oxford Index

Quantum Theory

John Polkinghorne.

May 2002; p ublished online September 2013 .

Book. Subjects: Quantum Physics. 128 pages.

Quantum Theory is the most revolutionary discovery in physics since Newton. Quantum Theory: A Very Short Introduction gives a lucid, exciting, and accessible account of the surprising and...

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quantum information theory

Edited by Richard Rennie and Jonathan Law.

in A Dictionary of Chemistry

January 2016; p ublished online January 2016 .

Reference Entry. Subjects: Chemistry. 30 words.

The combination of *information theory and *quantum mechanics. It has been suggested that quantum mechanics itself can be formulated in terms of quantum information theory....

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quantum theory and philosophy

Sophie Allen.

in The Oxford Companion to Philosophy

January 2005; p ublished online January 2005 .

Reference Entry. Subjects: Philosophy. 840 words.

The philosophical issues raised by quantum theory are largely dependent upon how quantum mechanics is interpreted in order to minimize

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quantum field theory

in A Dictionary of Physics

January 2009; p ublished online January 2009 .

Reference Entry. Subjects: Physics. 128 words.

A quantum-mechanical theory applied to systems that have an infinite number of degrees of freedom. In quantum field theories, particles

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quantum field theory

Edited by Jonathan Law and Richard Rennie.

in A Dictionary of Physics

January 2015; p ublished online September 2015 .

Reference Entry. Subjects: Physics. 129 words.

A quantum-mechanical theory applied to systems that have an infinite number of degrees of freedom. In quantum field theories, particles

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quantum theory of radiation

Edited by John Daintith.

in A Dictionary of Chemistry

January 2008; p ublished online January 2008 .

Reference Entry. Subjects: Chemistry. 138 words.

The theory that describes the emission and absorption of electromagnetic radiation. Since it is a quantum theory the processes of

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quantum field theory

Edited by Richard Rennie and Jonathan Law.

in A Dictionary of Physics

March 2019; p ublished online March 2019 .

Reference Entry. Subjects: Physics. 131 words.

A quantum-mechanical theory applied to systems that have an infinite number of degrees of freedom. In quantum field theories, particles are represented by fields that have quantized normal...

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old quantum theory

Edited by Richard Rennie and Jonathan Law.

in A Dictionary of Chemistry

January 2016; p ublished online January 2016 .

Reference Entry. Subjects: Chemistry. 61 words.

The name retrospectively given to the *quantum theory as it developed from its inception in 1900 to the formulation of ...

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quantum field theory

Overview page. Subjects: Physics.

A quantum-mechanical theory applied to systems that have an infinite number of degrees of freedom. In quantum field theories, particles are represented by fields that have quantized normal...

See overview in Oxford Index

Interpreting Quantum Theories

Laura Ruetsche.

June 2011; p ublished online September 2011 .

Book. Subjects: Philosophy of Science. 400 pages.

QM includes quantum field theory and the thermodynamic limit of quantum statistical mechanics — theories which, unlike the ‘ordinary’ quantum theories typically discussed by philosophers,...

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Quantum Information Theory

Christopher G. Timpson.

in Quantum Information Theory and the Foundations of Quantum Mechanics

April 2013; p ublished online September 2013 .

Chapter. Subjects: Philosophy of Science. 15238 words.

The approach to thinking about information developed in the previous chapter is turned towards the quantum theory. First, some of the characteristic ideas and applications of quantum...

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Probability and Quantum Theory

E. Brian Davies.

in Science in the Looking Glass

June 2007; p ublished online September 2008 .

Chapter. Subjects: History of Science and Technology. 15081 words.

This chapter discusses a series of examples which illustrate various peculiarities of probability theory. It shows that there are many situations in which two people may legitimately...

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Quantum Theory of Solids

R. E. Peierls.

February 2001; p ublished online September 2007 .

Book. Subjects: Condensed Matter Physics. 238 pages.

This book develops the quantum theory of solids from the basic principles of quantum mechanics. The emphasis is on a single statement of the ideas underlying the various approximations that...

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Reconstruction of Quantum Theory

Alexei Grinbaum.

in The British Journal for the Philosophy of Science

September 2007; p ublished online July 2007 .

Journal Article. Subjects: Philosophy of Science; Science and Mathematics. 8627 words.

What belongs to quantum theory is no more than what is needed for its derivation. Keeping to this maxim, we record a paradigmatic shift in the foundations of quantum mechanics, where the...

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Quantum Statistical Field Theory

Norman J. Morgenstern Horing.

July 2017; p ublished online January 2018 .

Book. Subjects: Mathematical and Statistical Physics. 464 pages.

The methods of coupled quantum field theory, which had great initial success in relativistic elementary particle physics and have subsequently played a major role in the extensive...

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