Dense 2-color QCD towards continuum and chiral limits

Understand

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.