Patterns of symmetry breaking in QCD at high baryon density.
作者： Thomas Schäfer
DOI: 10.1016/S0550-3213(00)00063-8
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摘要: We study the structure of QCD at very large baryon density for an arbitrary number flavors Nf. provide evidence that any larger than Nf=2 chiral symmetry remains broken asymptotically chemical potential. For Nc=Nf=3, breaking follows standard pattern SU(3)L×SU(3)R→SU(3), but Nf>3 unusual patterns emerge. case Nf=3 in more detail and calculate magnitude order parameters 〈ψψ〉 〈(ψψ)2〉 perturbative QCD. show that, asymptotically, 〈ψψ〉1/3 is much smaller 〈(ψψ)2〉1/6. The result can be understood terms approximate discrete symmetry.
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