Field theory
Encyclopedia
Field theory may refer to:
- Field theory (mathematics)Field theory (mathematics)Field theory is a branch of mathematics which studies the properties of fields. A field is a mathematical entity for which addition, subtraction, multiplication and division are well-defined....
, the theory of the algebraic concept of field - Field theory (physics), a physical theory which employs fields in the physical senseField (physics)In physics, a field is a physical quantity associated with each point of spacetime. A field can be classified as a scalar field, a vector field, a spinor field, or a tensor field according to whether the value of the field at each point is a scalar, a vector, a spinor or, more generally, a tensor,...
, consisting of two types:- Classical field theoryClassical field theoryA classical field theory is a physical theory that describes the study of how one or more physical fields interact with matter. The word 'classical' is used in contrast to those field theories that incorporate quantum mechanics ....
, the theory and dynamics of classical fields. - Quantum field theoryQuantum field theoryQuantum field theory provides a theoretical framework for constructing quantum mechanical models of systems classically parametrized by an infinite number of dynamical degrees of freedom, that is, fields and many-body systems. It is the natural and quantitative language of particle physics and...
, the theory of quantum mechanical fields.
- Classical field theory
- Field theory (psychology)Field theory (psychology)Field theory is a psychological theory which examines patterns of interaction between the individual and the total field, or environment. The concept was developed by Kurt Lewin, a Gestalt psychologist, in the 1940s and 1950s....
, a psychological theory which examines patterns of interaction between the individual and his environment