Instantons and color symmetry breaking in the vacuum

Details Instantons and color symmetry breaking in the vacuum Instantons and color symmetry breaking in the vacuum

2000-11-06

arxiv.org/abs/hep-ph/0011076v2

Phys.Lett. B525 (2002) 277-282

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages,LaTex,modified instanton vertex,improved mass of eta'

Scientific paper

10.1016/S0370-2693(01)01445-9

The instanton interaction in QCD generates an effective potential for scalar quark-antiquark condensates in the color singlet and octet channels. For three light quark flavors the cubic term in this potential induces an octet condensate and ``spontaneous breaking'' of color in the vacuum. Realistic masses of the rho- and eta'-mesons are compatible with renormalization-group-improved instanton perturbation theory.

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