Search results
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...
- Lagrangian
History of quantum field theory. 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).
Jun 22, 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.
This is a list of quantum field theories. The first few sections are organized according to their matter content, that is, the types of fields appearing in the theory. This is just one of many ways to organize quantum field theories, but reflects the way the subject is taught pedagogically.
The ideas of QM were extended to systems having an infinite number of degrees of freedom. The inception of QFT is usually dated 1927 with Dirac’s famous paper on “The quantum theory of the emission and absorption of radiation” (Dirac 1927). Here Dirac coined the name quantum electrodynamics (QED) which is the part of QFT that has been ...
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.
Feb 22, 2024 · Quantum field theory models the subatomic world quite differently. It begins with the Universe being filled with a series of fields. Where these fields are quiescent, space is relatively empty; however, where these fields experience vibrations, particles can be found. Indeed, these quantized vibrations are particles.