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Dense 2-color QCD towards continuum and chiral limits
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We study two-color QCD with two flavors of Wilson fermion as a function of quark chemical potential mu and temperature T, for two different lattice spacings and two different quark masses. We find that the quarkyonic region, where the behaviour of the quark number density and the diquark condensate are described by a Fermi sphere of almost free quarks distorted by a BCS gap, extends to larger chemical potentials with decreasing lattice spacing or quark mass. In both cases, the quark number density also approaches its non-interacting value. The pressure at low temperature is found to approach the Stefan-Boltzmann limit from below.
Forward citations
Cited by 2 Pith papers
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Dense QC$_2$D. What's up with that?!?
On a finer lattice than previous studies, the speed of sound in dense two-color QCD again rises above the conformal bound near the superfluid transition.
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Phase and equation of state of finite density QC$_2$D at lower temperature
Proceedings summarizing lattice QC2D results: the conformal bound c_s^2/c^2 = 1/3 is exceeded in the BCS phase at T = 40 and 80 MeV, with a rich hadronic/BEC/BCS phase structure.
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