Debye screening mass in linear (left) and quadratic (right) scales.\[fig:disp gluons\]](GluonsSquared2.eps "fig:")

![The dispersion relations $\omega_{i,k}$ of quarks (solid black), antiquarks (dashed grey), plasminos (black dashes) and antiplasminos (black points) scaled by the fermionic mass parameter are shown as functions of the momentum $k$ scaled by the fermionic mass parameter in linear (left) and quadratic (right) scales. \[fig:disp quarks\]](QuarksLinearBW2.eps "fig:")        ![The dispersion relations $\omega_{i,k}$ of quarks (solid black), antiquarks (dashed grey), plasminos (black dashes) and antiplasminos (black points) scaled by the fermionic mass parameter are shown as functions of the momentum $k$ scaled by the fermionic mass parameter in linear (left) and quadratic (right) scales. \[fig:disp quarks\]](QuarksSquaredBW2.eps "fig:")

2-loop QCD entropy
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Given the explicit form of the HTL self-energies and the respective propagators, we evaluate the remaining traces $\text{tr}$ in eq. (\[eq:Omegafinal\]). Assuming equal masses for $u$ and $d$ quarks and zero chemical potential of strange quarks the isospin chemical potential $\mu_{I}=(\mu_{u}-\mu_{d})/2$ is supposed to vanish at zero net charge. Therefore, there is only one independent chemical potential $\mu=\mu_{q}=\mu_{B}/3$, where $\mu_{B}$ is the baryo-chemical potential. As a consequence the flavor trace gives equal contributions of light quarks to the thermodynamic potential (i.e. a factor $N_{q}$). The contribution of the 