Perturbative QCD at non-zero chemical potential: Comparison with the large-Nf limit and apparent convergence

Abstract

The perturbative three-loop result for the thermodynamic potential of QCD at finite temperature and chemical potential as obtained in the framework of dimensional reduction is compared with the exact result in the limit of large flavor number. The apparent convergence of the former as well as possibilities for optimization are investigated. Corresponding optimized results for full QCD are given for the case of two massless quark flavors.

REVTEX4, 4 pages, 3 color figures. v2: fig. 3 now includes also lattice data for two-flavor QCD at nonzero chemical potential

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• Perturbative Thermal QCD: Formalism and Applications
• The QCD equation of state near T_0 within a quasi-particle model
• Mesonic correlation lengths in high-temperature QCD
• EMMI Rapid Reaction Task Force Meeting on 'Quark Matter in Compact Star'
• The pressure of deconfined QCD for all temperatures and quark chemical potentials
• Quasi-Particle Description of Strongly Interacting Matter: Towards a Foundation
• Four-loop pressure of massless O(N) scalar field theory
• Quark number susceptibilities from resummed perturbation theory
• Equation of state of deconfined matter within dynamical quasiparticle description
• Plasmons, plasminos and Landau damping in a quasiparticle model of the quark-gluon plasma
• Asymptotic thermal quark masses and the entropy of QCD in the large-N_f limit
• Hard thermal loops and the entropy of supersymmetric Yang-Mills theories
• The impact of quark masses on pQCD thermodynamics
• Study of the gluon propagator in the large-N_f limit at finite temperature and chemical potential for weak and strong couplings
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• Fermi-liquid theory of imbalanced quark matter
• The pressure of QCD at finite temperature and quark number density
• Thermodynamical consistency of quasiparticle model at finite baryon density
• Lattice QCD at finite density: imaginary chemical potential
• Probing the finite density equation of state of QCD via resummed perturbation theory
• Momentum expansions in finite-density perturbative calculations
• Thermodynamics of QCD at large quark chemical potential
• QCD pressure up to four loops at finite temperature and density