Quantum field theory - Wikipedia
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.
Quantum Field Theory - Stanford Encyclopedia of Philosophy
2006年6月22日 · 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.
4.4: Quantum Field Theory - Physics LibreTexts
We now have the tools available to understand the connection between a very simple classical field and its quantum counterpart. Consider a classical scalar field variable \(f(x,t)\), defined in one spatial dimension, whose classical equation of motion is the wave equation:
Preskill Lecture Notes on Quantum Field Theory
These are scanned handwritten lecture notes for courses I have taught on particle theory, field theory, and scattering theory. Contents. Physics 230abc, Quantum Chromodynamics, 1983-84; Physics 236c, Quantum Field Theory in Curved Spacetime, 1990; Physics 205abc, Quantum Field Theory, 1986-87; Physics 230bc, Field Theory and Topology, 2000
Quantum Field Theory (QFT) is the theoretical foundation of modern quantum theory. It underlies the de- scription of the fundamental interactions of matter in terms of the Standard Model (SM) of particle physics,
In quantum field theory, you start with classical wave equation, with no concept of particle. After quan-tizing it, we find particle interpretation of excitations in the system. Either way, we find particle-wave duality, i.e., the energy/momentum is carried by a quantum object which is neither exactly a wave or a particle. It is both.
Quantum field theory | Definition & Facts | Britannica
2024年10月26日 · 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.
In these lectures we present a few topics in Quantum Field Theory in detail. Some of them are conceptual and some more practical. They have been selected because they appear frequently in current applications to Particle Physics and String Theory. ∗Based on lectures delivered by L.A.-G. at the 3rd. CERN-CLAFSchool of High-Energy Physics ...
Quantum Field Theory - Stanford Encyclopedia of Philosophy
2006年6月22日 · 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 …
This is the first in a three volume series by one of the masters of quantum field theory. It takes a unique route to through the subject, focussing initially on particles rather than fields.