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gauge-invariant quantity

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  • Gauge theory — For a generally accessible and less technical introduction to the topic, see Introduction to gauge theory. In physics, a gauge theory is a type of field theory in which the Lagrangian is invariant under a continuous group of local transformations …   Wikipedia

  • Gauge fixing — Quantum field theory (Feynman diagram) …   Wikipedia

  • Supersymmetric gauge theory — mathcal{N}=1 SUSY in 4D (with 4 real generators) = In theoretical physics, one often analyzes theories with supersymmetry which also haveinternal gauge symmetries. So, it is important to come up with a supersymmetric generalizationof gauge… …   Wikipedia

  • Introduction to gauge theory — This article is an accessible, non technical introduction to the subject. For the main encyclopedia article, see Gauge theory. Quantum field theory …   Wikipedia

  • Knot invariant — In the mathematical field of knot theory, a knot invariant is a quantity (in a broad sense) defined for each knot which is the same for equivalent knots. The equivalence is often given by ambient isotopy but can be given by homeomorphism. Some… …   Wikipedia

  • Quantum chromodynamics — Standard model of particle physics Standard Model …   Wikipedia

  • Angular momentum — For a generally accessible and less technical introduction to the topic, see Introduction to angular momentum. Classical mechanics Newton s Second Law …   Wikipedia

  • Canonical commutation relation — In physics, the canonical commutation relation is the relation between canonical conjugate quantities (quantities which are related by definition such that one is the Fourier transform of another), for example: between the position x and momentum …   Wikipedia

  • Wilson loop — In gauge theory, a Wilson loop (named after Kenneth Wilson) is a gauge invariant observable obtained from the holonomy of the gauge connection around a given loop. In the classical theory, the collection of all Wilson loops contains sufficient… …   Wikipedia

  • Higgs mechanism — The Higgs mechanism is spontaneous symmetry breaking in a gauge theory.It considers all of space filled with a quantum field, called the Higgs field, the interaction with which prevents certain forces from propagating over long distances. Part of …   Wikipedia

  • Mass in general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts …   Wikipedia

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