A classical field theory is a physical theory that describes the study of how one or more field 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 theory or QFT provides a theoretical framework for constructing quantum mechanics models of systems classically described by field or of Many-body problem.... , the theory of quantum mechanical
Quantum mechanics
Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the microscopic scale . Notable amongst these principles are both a dual wave-like and particle-like behavior of matter and radiation, and prediction of probabilities in situations where classical physics predicts certaintie... fields.
In physics, a field is a physical quantity associated to each point of spacetime. A field can be classified as a scalar field, a vector field, or a tensor field, according to whether the value of the field at each point is a scalar , a vector , or, more generally, a tensor, respectively....
