quantum field theory

noun, Physics.

any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated.

Origin

1945-50

Examples from the web for quantum field theory

His specialties include quantum field theory and mathematical physics.
Unfortunately, the electroweak model suffered from the same problems in prediction as the quantum field theory.
Your first comment seems to be a vision of some type of quantum field theory.
There is now work predicting fusion from quantum field theory, applied to physical configurations that weren't anticipated.
Now the next thing he did which was he was one of the coinventors of quantum field theory.
In quantum field theory, gravitons can be mathematically proven to obey the equivalence principle.
For every physical field theory it should be possible to formulate it as quantum field theory.
The concept of renormalization group transformation is often used in statistical mechanics and quantum field theory.

British Dictionary definitions for quantum field theory

quantum field theory

noun

(physics) quantum mechanical theory concerned with elementary particles, which are represented by fields whose normal modes of oscillation are quantized

quantum field theory in Science

quantum field theory
The application of quantum mechanics to physical systems described by fields, such as electromagnetic fields. Quantum field theory was developed to overcome certain deficiencies in Schrödinger's equation, in particular the fact that it was not consistent with special relativity and was difficult to apply to systems involving many particles or to the creation and destruction of particles. See also quantum chromodynamics, quantum electrodynamics.