A meron or half-instanton is a Euclidean space-time solution of the Yang–Mills field equations. It is a singular non-self-dual solution of topological charge 1/2. The instanton is believed to be composed of two merons.[1]

A meron can be viewed as a tunneling event between two Gribov vacua.[2] In that picture, the meron is an event which starts from vacuum, then a Wu–Yang monopole emerges, which then disappears again to leave the vacuum in another Gribov copy.

See also

References

  1. Allan, Curtis (1977). "A Mechanism for Quark Confinement". Physics Letters. 66B (4): 375–381. arXiv:hep-ph/9809351. doi:10.1016/0370-2693(77)90019-3.
  2. Actor, Alfred (1979). "Classical solutions of SU(2) Yang-Mills theories". Reviews of Modern Physics. 51 (3): 461–525. Bibcode:1979RvMP...51..461A. doi:10.1103/RevModPhys.51.461.


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