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Color charge is a property of quarks and gluons that is related to the particles' strong interactions in the theory of quantum chromodynamics (QCD). Like electric charge, it determines how quarks and gluons interact through the strong force; however, rather than there being only positive and negative charges, there are three "charges", commonly called red, green, and blue.
A quark, which will have a single color value, can form a bound system with an antiquark carrying the corresponding anticolor. The result of two attracting quarks will be color neutrality: a quark with color charge ξ plus an antiquark with color charge −ξ will result in a color charge of 0 (or "white" color) and the formation of a meson.
The pattern of strong charges for the three colors of quark, three antiquarks, and eight gluons (with two of zero charge overlapping). Quarks are massive spin- 1 ⁄ 2 fermions that carry a color charge whose gauging is the content of QCD.
The strength of the color force makes the properties of quark matter unlike gas or plasma, instead leading to a state of matter more reminiscent of a liquid. At high densities, quark matter is a Fermi liquid , but is predicted to exhibit color superconductivity at high densities and temperatures below 10 12 K.
For instance a pentaquark made of two up quarks, one down quark, one charm quark, and one charm antiquark would be denoted uudc c. The quarks are bound together by the strong force, which acts in such a way as to cancel the colour charges within the particle. In a meson, this means a quark is partnered with an antiquark with an opposite colour ...
Quarks carry not only electric charge, but also charges such as color charge and weak isospin. Because of a phenomenon known as color confinement , a hadron cannot have a net color charge; that is, the total color charge of a particle has to be zero ("white").
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Color superconductivity is a phenomenon where matter carries color charge without loss, analogous to the way conventional superconductors can carry electric charge without loss. Color superconductivity is predicted to occur in quark matter if the baryon density is sufficiently high (i.e., well above the density and energies of an atomic nucleus ...