Conformal field theory

Conformal Field Theories (English Conformal Field Theory, abbreviation CFT) are in theoretical physics field theories that describe the point-like particles and their interactions, and may have a particularly high degree of symmetry, since they do not change under conformal ( conformal ) mapping their shape.

Most are referred to with the term conformal quantum field theories. They occur in the unified description of the fundamental forces of physics and in the evaluation of string theory.

While the conformal invariance is easy to ensure in classical field theories, the corresponding quantum field theories are usually not invariant under conformal figures such as enlargement or reduction of the scale, because it changes the strength of the coupling with the energy transferred due to quantum corrections. In this quantum effect is called the anomalous breaking of scale invariance by running couplings.

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