Quark number susceptibilities from resummed perturbation theory

Abstract

We evaluate the second and fourth order quark number susceptibilities in hot QCD using two variations of resummed perturbation theory. On one hand, we carry out a one-loop calculation within hard-thermal-loop perturbation theory, and on the other hand perform a resummation of the four-loop finite density equation of state derived using a dimensionally reduced effective theory. Our results are subsequently compared with recent high precision lattice data, and their agreement thoroughly analyzed.

5 pages, 3 figures. v3: Figures updated, published in Phys. Rev. D

References in corpus (6)

• The QCD equation of state with dynamical quarks
• Equation of state and QCD transition at finite temperature
• NNLO hard-thermal-loop thermodynamics for QCD
• The leading non-perturbative coefficient in the weak-coupling expansion of hot QCD pressure
• Three-dimensional physics and the pressure of hot QCD
• The pressure of deconfined QCD for all temperatures and quark chemical potentials

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• Review of recent highlights in lattice calculations at finite temperature and finite density
• Three loop HTL perturbation theory at finite temperature and chemical potential
• QCD thermodynamics on the lattice
• Recent progress in hard-thermal-loop QCD thermodynamics and collective excitations
• From Heavy-Ion Collisions to Compact Stars: Equation of State and Relevance of the System Size
• Probing the finite density equation of state of QCD via resummed perturbation theory
• Non-perturbative study of spectral function and its application in Quark Gluon Plasma