  Using quasiparticle models and imposing thermodynamic consistency, lattice
data for the equation of state of deconfined QCD can be mapped to finite
chemical potential. We consider a refinement of existing simple massive
quasiparticle models using the non-local hard-thermal-loop (HTL) propagators,
and certain NLO corrections thereof, to obtain the thermodynamic potential as a
function of temperature and chemical potential. At small chemical potential we
find that the results for the slope of constant pressure from our main model
for 2 massless quark flavors is in good agreement with recent lattice data for
2+1 flavors while it deviates somewhat from lattice data for 2 flavors from
another group. For zero temperature, we obtain an estimate for the critical
chemical potential which is close to that obtained from simpler quasiparticle
models.
