Instantons and color symmetry breaking in the vacuum

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.

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

References in corpus (2)

• Evolution equations for the effective four-quark interactions in QCD
• Higgs description of two-flavor QCD vacuum

Cited by in corpus (7)

• Single color and single flavor color superconductivity
• Color superconductivity, Z_N flux tubes and monopole confinement in deformed N=2* super Yang-Mills theories
• Effective Degrees of Freedom at Chiral Restoration and the Vector Manifestation in HLS theory
• Do Instantons Like a Colorful Background?
• Connection between Chiral Symmetry Restoration and Deconfinement
• First Order Chiral Phase Transition from a Six-fermion ''Instanton''-Interaction
• Chiral random matrix theory for colorful quark-antiquark condensates