1 BI - TP 97 / 19 June 1997 On QCD Thermodynamics with Improved Actions ∗
نویسنده
چکیده
We will discuss recent advances in the calculation of thermodynamic observables using improved actions. In particular, we will discuss the calculation of the equation of state of the SU(3) gauge theory, the critical temperature in units of the string tension, the surface tension and the latent heat at the deconfinement transition. We also will present first results from a calculation of the equation of state for four-flavour QCD using an O(a) improved staggered fermion action and discuss possible further improvements of the staggered fermion action.
منابع مشابه
ar X iv : h ep - l at / 9 70 60 06 v 1 6 J un 1 99 7 1 BI - TP 97 / 19 June 1997 On QCD Thermodynamics with Improved Actions ∗
We will discuss recent advances in the calculation of thermodynamic observables using improved actions. In particular, we will discuss the calculation of the equation of state of the SU (3) gauge theory, the critical temperature in units of the string tension, the surface tension and the latent heat at the deconfinement transition. We also will present first results from a calculation of the eq...
متن کاملar X iv : h ep - l at / 9 70 60 06 v 2 8 J ul 1 99 7 1 BI - TP 97 / 19 June 1997 On QCD Thermodynamics with Improved Actions ∗
We discuss recent advances in the calculation of thermodynamic observables using improved actions. In particular, we discuss the calculation of the equation of state of the SU (3) gauge theory, the critical temperature in units of the string tension, the surface tension and the latent heat at the deconfinement transition. We also present first results from a calculation of the equation of state...
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We analyze the cutoff dependence of the fermion contribution to the finite temperature free energy density in O(g 2) lattice perturbation theory for several improved staggered fermion actions. Cutoff 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 O(g 2) further reduce...
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The thermodynamics of the SU(3) gauge theory has been analyzed with tree level and tadpole improved Symanzik actions. A comparison with the continuum extrapolated results for the standard Wilson action shows that improved actions lead to a drastic reduction of finite cutoff effects already on lattices with temporal extent Nτ = 4. Results for the pressure, the critical temperature, surface tensi...
متن کاملQCD Thermodynamics with an Improved Lattice Action
We have investigated QCD with two flavors of degenerate fermions using a Symanzikimproved lattice action for both the gauge and fermion actions. Our study focuses on the deconfinement transition on an Nt = 4 lattice. Having located the thermal transition, we performed zero temperature simulations nearby in order to compute hadronic masses and the static quark potential. We find that the present...
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تاریخ انتشار 1997