QCD at small non-zero quark chemical potentials

Details QCD at small non-zero quark chemical potentials QCD at small non-zero quark chemical potentials

2001-03-25

arxiv.org/abs/hep-ph/0103271v1

Phys.Rev. D64 (2001) 034007

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 5 figures

Scientific paper

10.1103/PhysRevD.64.034007

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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