In quantum chromodynamics, in fact already in pure SU(3) Yang-Mills theory, a glueball is a bound state of (just) gluons (a kind of confinement).

Glueballs are hard to detect in experiment but their existence is confirmed by lattice QCD, also by the AdS-QCD correspondence (see there). According to Greensite 11, section 8.5:

The caloron idea is probably the most promising current version of monopole confinement in pure non-abelian gauge theories, but it is basically (in certain gauges) a superposition of monopoles with spherically symmetric abelian fields, and this leads to the same questions raised in connection with monopole Coulomb gases.


See also

Created on December 3, 2018 at 08:49:22. See the history of this page for a list of all contributions to it.