Improved Staggered Fermion Actions for QCD Thermodynamics

Abstract

We analyze the cut-off dependence of the fermion contribution to the finite temperature free energy density in $\mathcal{O}(g^2)$ lattice perturbation theory for several improved staggered fermion actions. Cut-off effects are drastically reduced for the Naik action and an action with improved rotational symmetry of the quark propagator. We show that improvement of rotational symmetry at $\mathcal{O}(g^2)$ further reduces cut-off effects in thermodynamic observables. We also show that the introduction of fat-links does not have a significant influence on cut-off distortions at $\mathcal{O}(g^2)$.

23 pages, 6 figures

References in corpus (4)

• Quenched hadron spectroscopy with improved staggered quark action
• On-shell improved lattice QCD with staggered fermions
• On QCD Thermodynamics with Improved Actions
• Staggered Fermion Actions with Improved Rotational Invariance

Cited by in corpus (50)

• The equation of state in (2+1)-flavor QCD
• The chiral and deconfinement aspects of the QCD transition
• The QCD thermal phase transition in the presence of a small chemical potential
• The QCD Equation of State with almost Physical Quark Masses
• Equation of state and QCD transition at finite temperature
• Quark Mass and Flavour Dependence of the QCD Phase Transition
• Full nonperturbative QCD simulations with 2+1 flavors of improved staggered quarks
• The Equation of State for Two Flavor QCD at Non-zero Chemical Potential
• The Pressure in 2, 2+1 and 3 Flavour QCD
• The transition temperature in QCD
• Fluctuations and Correlations of net baryon number, electric charge, and strangeness: A comparison of lattice QCD results with the hadron resonance gas model
• The equation of state in lattice QCD: with physical quark masses towards the continuum limit
• Baryon Number, Strangeness and Electric Charge Fluctuations in QCD at High Temperature
• Phase structure and critical temperature of two-flavor QCD with a renormalization group improved gauge action and clover improved Wilson quark action
• The QCD equation of state from the lattice
• Lattice QCD at non-zero temperature
• The Chiral Critical Point in 3-Flavour QCD
• Meson screening masses from lattice QCD with two light and the strange quark
• QCD Thermodynamics from the Lattice
• Equation of State in 2+1 Flavor QCD at High Temperatures
• Quark number susceptibilities at high temperatures
• Deconfinement and chiral transition with the highly improved staggered quark (HISQ) action
• Study of the finite temperature transition in 3-flavor QCD using the R and RHMC algorithms
• Signatures of charmonium modification in spatial correlation functions
• One-loop matching coefficients for improved staggered bilinears
• Remarks on the multi-parameter reweighting method for the study of lattice QCD at non-zero temperature and density
• The phase structure of QCD
• QCD Thermodynamics on lattice
• Brillouin improvement for Wilson fermions
• SU(3) Polyakov linear-sigma model: Conductivity and viscous properties of QCD matter in thermal medium
• Has Tc been measured by heavy ion experiments?
• Taste symmetry breaking with HYP-smeared staggered fermions
• Finite Volume Effects in Thermal Field Theory
• Cutoff effects of Wilson fermions on the QCD equation of state to O(g^2)
• Progress in finite temperature lattice QCD
• Fluctuations in the vicinity of the phase transition line for two flavor QCD
• Taste symmetry breaking at finite temperature
• Flavor symmetry breaking and scaling for improved staggered actions in quenched QCD
• Properties of quark gluon plasma from lattice calculations
• Improving the Quark Number Susceptibilities for Staggered Fermions
• Renormalization group improved action on anisotropic lattices
• QCD at non-zero temperature and density from the lattice
• Thermodynamics using p4-improved staggered fermion action on QCDOC
• Scaling test of the P4-improved staggered fermion action
• Thermodynamics of (2+1)-flavor QCD
• Aspects of the thermal phase transition of QCD with small chemical potential
• Lattice results with three quark flavours
• The QCD equation of state and transition at finite temperature
• Taste symmetry violation at finite temperature
• Dynamical fermions in lattice quantum chromodynamics