quantum field theory
noun
: 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
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The way to avoid these limitations isn’t to abandon quantum field theory, but rather to go beyond the perturbative approach of Feynman diagrams, and to perform the full analytic calculations demanded by the underlying quantum field theory.
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Ethan Siegel, Big Think, 5 Sep. 2025
The quantum field theory describing it, called quantum chromodynamics, or QCD, is mathematically much more complex than the theory of the electromagnetic field.
—Shalma Wegsman, Quanta Magazine, 5 Sep. 2025
To model these events precisely, the team turned to quantum field theory, which is a branch of physics typically used to describe interactions between elementary particles.
—Sharmila Kuthunur, Space.com, 16 May 2025
The first was that the Italian physicist Fabiola Gianotti had made a significant discovery in quantum field theory.
—Simon Garfield, The Atlantic, 21 Oct. 2024
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Ethan Siegel, Big Think, 5 Sep. 2025
The quantum field theory describing it, called quantum chromodynamics, or QCD, is mathematically much more complex than the theory of the electromagnetic field.
—Shalma Wegsman, Quanta Magazine, 5 Sep. 2025
To model these events precisely, the team turned to quantum field theory, which is a branch of physics typically used to describe interactions between elementary particles.
—Sharmila Kuthunur, Space.com, 16 May 2025
The first was that the Italian physicist Fabiola Gianotti had made a significant discovery in quantum field theory.
—Simon Garfield, The Atlantic, 21 Oct. 2024
See All Example Sentences for quantum field theory
Cite this Entry
“Quantum field theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20field%20theory. Accessed 31 Oct. 2025.
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