Field theory may refer to:
- Field theory (mathematics), the theory of the algebraic concept of field
- Field theory (physics), a physical theory which employs fields in the physical sense, consisting of two types:
- Classical field theory, the theory and dynamics of classical fields.
- Quantum field theory, the theory of quantum mechanical fields.
- Field theory (psychology), a psychological theory which examines patterns of interaction between the individual and his or her environment
Other articles related to "field theory, theory":
... In theoretical physics, a logarithmic conformal field theory is a generalization of the concept of (usually two-dimensional) conformal field theory in which ...
... for why the spin states exist according to ligand field theory is essentially the same as the crystal field theory explanation ...
... The derivations typically rely on a mean field theory approximation to microscopic dynamical equations ... Mean field theory breaks down in the presence of large fluctuations (see Mean field theory article for a discussion) ...
... S-matrix theory was a proposal for replacing local quantum field theory as the basic principle of elementary particle physics ... In S-matrix theory, the S-matrix relates the infinite past to the infinite future in one step, without being decomposable into intermediate steps ... program was very influential in the 1960s, because it was a plausible substitute for quantum field theory, which was plagued with the zero interaction phenomenon at strong coupling ...
... as the running of the coupling parameter, and theory of this kind of scale-dependence in quantum field theory is described by the renormalization group ... Beta-functions are usually computed in an approximation scheme, most commonly perturbation theory, where one assumes that the coupling constant is small ... The beta-function at one loop (the first perturbative contribution) for the theory is The fact that the sign in front of the lowest-order term is positive ...
Famous quotes containing the words theory and/or field:
“PsychotherapyThe theory that the patient will probably get well anyway, and is certainly a damned ijjit.”
—H.L. (Henry Lewis)
“I would say that deconstruction is affirmation rather than questioning, in a sense which is not positive: I would distinguish between the positive, or positions, and affirmations. I think that deconstruction is affirmative rather than questioning: this affirmation goes through some radical questioning, but it is not questioning in the field of analysis.”
—Jacques Derrida (b. 1930)