QCD Kondo effect for single heavy quark in chiral-symmetry broken phase
Physical Review D(2024)
摘要
We consider the QCD Kondo effect for a single heavy quark in quark matter
composed of light quarks with chiral symmetry breaking. Introducing several
spinor structures in QCD Kondo condensates, i.e., particle-projected
condensate, antiparticle-projected condensate, and normal condensate without
projection, we calculate the attractive energy gained by the heavy quark within
the mean-field approximation in the path-integral formalism. We show that the
normal condensate is favored at low density and the particle-projected
condensate is favored at high density, when the light quark has a nonzero mass.
We interpret such a density-dependent transition between the two condensates in
terms of the Kondo resonances.
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