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arXiv · hep-ph/0103271

QCD at small non-zero quark chemical potentials

J. B. Kogut·D. Toublan
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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.

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J. B. Kogut, D. Toublan. 2001-03-25. QCD at small non-zero quark chemical potentials. https://doi.org/10.1103/physrevd.64.034007

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