## Quantum Chromodynamics

In theoretical physics, **quantum chromodynamics** (**QCD**) is a theory of the strong interaction (color force), a fundamental force describing the interactions between quarks and gluons which make up hadrons (such as the proton, neutron or pion). It is the study of the **SU**(3) Yang–Mills theory of color-charged fermions (the quarks). QCD is a quantum field theory of a special kind called a non-abelian gauge theory, consisting of a 'color field' mediated by a set of exchange particles (the gluons). The theory is an important part of the Standard Model of particle physics. A huge body of experimental evidence for QCD has been gathered over the years.

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### Some articles on quantum chromodynamics:

... high energy experiments to extract precise information about

**Quantum Chromodynamics**, electroweak interactions and possible new physics." 2011 Chris Quigg ... Keith Ellis "For work in perturbative

**Quantum Chromodynamics**, including applications to problems pivotal to the interpretation of high energy particle ... of the heavy quark mass expansion and the discovery of the heavy quark symmetry in

**quantum chromodynamics**, which led to a quantitative theory of the decays of c and b ...

**Quantum Chromodynamics**- Cross-relations To Solid State Physics

... There is also a correspondence between confinement in QCD - the fact that the color-field is only different from zero in the interior of hadrons - and the behaviour of the usual magnetic field in the theory of type-II superconductors there the magnetism is confined to the interiour of the Abrikosov flux-line lattice, i.e ... the London penetration depth λ of that theory is analogous to the confinement radius Rc of quantum chromodynamics ...

... The theory that describes strong interactions is called

**quantum chromodynamics**(QCD) ... that relates the color charge in quarks and is the defining symmetry for

**quantum chromodynamics**... to a new orientation, the physics of

**quantum chromodynamics**is independent of which directions in three-dimensional color space are identified as blue, red, and green ...

**Quantum Chromodynamics**

... and its study has led to new insights on

**quantum chromodynamics**, a gauge theory, which is the fundamental theory of the strong nuclear force ... To this end, it is hoped that a gravitational theory dual to

**quantum chromodynamics**will be found ... heavy-ion collisions the physics, however, is strictly that of standard

**quantum chromodynamics**, which has been quantitatively modeled by lattice QCD methods with good results ...

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