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 of quantum field theory
First recorded in 1945–50
Words nearby 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
Scientific definitions for quantum field theory
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.