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==Wikipedia as a Resource== [https://en.wikipedia.org/wiki/Quark–gluon_plasma QGP]: <ul> <li> "QGP (quark-gluon plasma) is a state of matter in which the elementary particles that make up the hadrons of baryonic matter are freed of their strong attraction for one another under extremely high energy densities." </li> <li> "In normal matter quarks are ''confined''; in the QGP (quark-gluon plasma) quarks are ''deconfined''." </li> <li> "In classical QCD quarks are the ''fermionic'' components of hadrons (mesons and baryons) while the gluons are considered the boson components of such particles. The gluons are the force carriers, or bosons, of the QCD color force, while the quarks by themselves are their fermionic matter counterparts." <ul> <li>Electrons (spin 1/2 particles) and (as a composite particle) protons are fermions; they obey Fermi-Dirac statistics.</li> <li>According to the Standard Model of Particle Physics, photons (spin 1 particles) are one of only 5 elementary bosons; they obey Bose-Einstein statistics.</li> </ul> </li> </ul> [https://en.wikipedia.org/wiki/Color_confinement Color confinement]: <ul> <li> "[This] phenomenon can be understood qualitatively by noting that the force-carrying [bosonic] gluons of QCD have color charge [as well as do the fermionic quarks], unlike the photons of QED. Whereas the electric field between electrically charged particles decreases rapidly as those particles are separated, the gluon field between a pair of color charges forms a narrow flux tube (or string) between them. Because of this behavior of the gluon field, the strong force between the particles is constant regardless of their separation." </li> </ul> [https://en.wikipedia.org/wiki/Strong_interaction Strong interaction]: <ul> <li> "Unlike all other forces … the strong force does not diminish in strength with increasing distance between pairs of quarks. After a limiting distance (about the size of a hadron) has been reached, it remains at a strength of about 10,000 newtons, no matter how much farther the distance between the quarks." Hence, the effective potential has a term that is linear in r. </li> </ul>
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