chiral anomaly

См. также в других словарях:

• Chiral anomaly — A chiral anomaly is the anomalous nonconservation of a chiral current. In some theories of fermions with chiral symmetry, the quantization may lead to the breaking of this (global) chiral symmetry. In that case, the charge associated with the… …   Wikipedia

• Anomaly (physics) — In quantum physics an anomaly or quantum anomaly is the failure of a symmetry of a theory s classical action to be a symmetry of any regularization of the full quantum theory. In classical physics an anomaly is the failure of a symmetry to be… …   Wikipedia

• Anomaly — An anomaly is any occurrence or object that is strange, unusual, or unique. In the following particular contexts it may refer to:Astronomy* Eccentric anomaly, intermediate value used to compute the position of a celestial object as a function of… …   Wikipedia

• Anomaly matching condition — In quantum field theory, the anomaly matching condition by Gerard t Hooft states that the calculation of any chiral anomaly by using the degrees of freedom of the theory at some energy scale, must not depend on what scale is chosen for the… …   Wikipedia

• Chiral gauge theory — In quantum field theory, a chiral gauge theory is a quantum field theory with charged chiral (i.e. Weyl) fermions. For instance, the Standard Model is a chiral gauge theory. For topological reasons, chiral charged fermions cannot be given a mass… …   Wikipedia

• Chiral symmetry — In quantum field theory, chiral symmetry is a possible symmetry of the Lagrangian under which the left handed and right handed parts of Dirac fields transform independently. The chiral symmetry transformation can be divided into a component that… …   Wikipedia

• Gauge anomaly — In theoretical physics, a gauge anomaly is an example of an anomaly: it is an effect of quantum mechanics usually a one loop diagram that invalidates the gauge symmetry of a quantum field theory; i.e. of a gauge theory. Anomalies in gauge… …   Wikipedia

• Gravitational anomaly — Anomalies in the usual 4 spacetime dimensions arise from triangle Feynman diagrams Not to be confused with Gravity anomaly. In theoretical physics, a gravitational anomaly is an example of a gauge anomaly: it is an effect of quantum… …   Wikipedia

• Mixed anomaly — In theoretical physics, a mixed anomaly is an example of an anomaly: it is an effect of quantum mechanics usually a one loop diagram that implies that the classically valid general covariance and gauge symmetry of a theory of general relativity… …   Wikipedia

• Conformal anomaly — is an anomaly i.e. a quantum phenomenon that breaks the conformal symmetry of the classical theory. A classically conformal theory is a theory which, when placed on a surface with arbitrary background metric, has an action that is invariant under …   Wikipedia

• Global anomaly — In theoretical physics, a global anomaly is a type of anomaly: in this particular case, it is a quantum effect that invalidates a large gauge transformations that would otherwise be preserved in the classical theory. This leads to an… …   Wikipedia