Improvement of the hot QCD pressure by the minimal sensitivity criterion

الأصل · EN

The principles of minimal sensitivity (PMS) criterion is applied to the perturbative free energy density, or pressure, of hot QCD, which include the gₛ⁶ gₛ and part of the gₛ⁶ terms. Applications are made separately to the short- and long-distance parts of the pressure. Comparison with the lattice results, at low temperatures, shows that the resultant `` optimal'' approximants are substantially improved when compared to the MS results. In particular, for the realistic case of three quark flavors, the `` optimal'' approximants are comparable with the lattice results.