quantum field theory


Definition of quantum field theory

: a theory in physics: the interaction of two separate physical systems (such as particles) is attributed to a field that extends from one to the other and is manifested in a particle exchange between the two systems

Examples of quantum field theory in a Sentence

Recent Examples on the Web Over the past few years, the physicist John Preskill and his collaborators have shown how to use quantum computers to efficiently simulate several simple quantum field theories. Quanta Magazine, "The Physical Origin of Universal Computing," 27 Oct. 2015 These quantum field theories were developed in the 1950s to unify special relativity and quantum mechanics. Quanta Magazine, "The Strange Second Life of String Theory," 15 Sep. 2016 Now many physicists are attempting to do the same with quantum field theory. Quanta Magazine, "The Strange Second Life of String Theory," 15 Sep. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quantum field theory.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of quantum field theory

1948, in the meaning defined above

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The first known use of quantum field theory was in 1948

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Cite this Entry

“Quantum field theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20field%20theory. Accessed 22 Oct. 2020.

More from Merriam-Webster on quantum field theory

Britannica.com: Encyclopedia article about quantum field theory

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