QCD at small nonzero quark chemical potentials
Mar, 2001Citations per year
Abstract:
We study the effects of small chemical potentials associated with the three light quark flavors in QCD. We use a low-energy effective field theory that solely relies on the symmetries of the QCD partition function. We find three different phases: a normal phase, a pion superfluid phase and a kaon superfluid phase. The two superfluid phases are separated by a first order phase transition, whereas the normal phase and either of the superfluid phases are separated by a second order phase transition. We compute the quark-antiquark condensate, the pion condensate and the kaon condensate in each phase, as well as the isospin density, the strangeness density, and the mass spectrum.- quantum chromodynamics
- critical phenomena
- potential: chemical
- quark: flavor
- effective Lagrangian
- ground state
- quark: condensation
- pi: condensation
- K: condensation
- superfluid
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