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arXiv · hep-ph/0011076

Instantons and color symmetry breaking in the vacuum

C. Wetterich
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Abstract

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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C. Wetterich. 2000-12-05. Instantons and color symmetry breaking in the vacuum. https://doi.org/10.1016/s0370-2693(01)01445-9

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