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
Famous quotes containing the words field and/or theory:
“And through the field the road runs by
To many-towered Camelot;”
—Alfred Tennyson (1809–1892)
“A theory if you hold it hard enough
And long enough gets rated as a creed....”
—Robert Frost (1874–1963)