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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.
Die Quantenfeldtheorie ( QFT) ist ein Gebiet der theoretischen Physik, in dem Prinzipien klassischer Feldtheorien (zum Beispiel der klassischen Elektrodynamik) und der Quantenmechanik zur Bildung einer erweiterten Theorie kombiniert werden. Sie geht über die Quantenmechanik hinaus, indem sie Teilchen und Felder einheitlich beschreibt.
22. Juni 2006 · 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.
Why Quantum Field Theory? In classical physics, the primary reason for introducing the concept of the eld is to construct laws of Nature that are local. The old laws of Coulomb and Newton involve \action at a distance". This means that the force felt by an electron (or planet) changes { 1
21. Juni 2024 · 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.
1 A Brief History of Quantum Field Theory Quantum fleld theory (QFT) is a subject which has evolved considerably over the years and continues to do so. From its beginnings in elementary particle physics it has found applications in many other branches of science, in particular condensed matter physics but also as far afleld as biology and ...
Quantum field theory. Quantum-based theories that explain how the forces of nature work. By Richard Webb. Quantum field theory marries the ideas of other quantum theories to depict all...
