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Quantum field theory emerged from the work of generations of theoretical physicists spanning much of the 20th century. Its development began in the 1920s with the description of interactions between light and electrons, culminating in the first quantum field theory—quantum electrodynamics.
- Lagrangian
Lagrangian field theory is a formalism in classical field...
- Classical Field Theory
A classical field theory is a physical theory that predicts...
- History
In particle physics, the history of quantum field theory...
- Lagrangian
Jun 22, 2006 · First published Thu Jun 22, 2006; substantive revision Mon Aug 10, 2020. Quantum Field Theory (QFT) is the mathematical and conceptual framework for contemporary elementary particle physics. It is also a framework used in other areas of theoretical physics, such as condensed matter physics and statistical mechanics.
In particle physics, the history of quantum field theory starts with its creation by Paul Dirac, when he attempted to quantize the electromagnetic field in the late 1920s. Major advances in the theory were made in the 1940s and 1950s, leading to the introduction of renormalized quantum electrodynamics (QED).
quantum field theory, body of physical principles combining the elements of quantum mechanics with those of relativity to explain the behaviour of subatomic particles and their interactions via a variety of force fields.
- The Editors of Encyclopaedia Britannica
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Aug 10, 2022 · Quantum field theory may be the most successful scientific theory of all time, predicting experimental results with stunning accuracy and advancing the study of higher dimensional mathematics. Yet, there’s also reason to believe that it is missing something. Steven Strogatz speaks with David Tong, a theoretical physicist at the University of ...
The Early Development. The historical development of QFT is very instructive until the present day. Its first achievement, namely the quantization of the electromagnetic field is “still the paradigmatic example of a successful quantum field theory” (Weinberg 1995).
Jun 22, 2006 · Quantum Field Theory (QFT) is the mathematical and conceptual framework for contemporary elementary particle physics. Since the very beginning of western philosophy reflections about the material world which go beyond the directly observable play a central role in philosophy.
