Polyakov Loops and Finite-Size Effects of Hadron Masses in Lattice Full QCD
نویسنده
چکیده
The polarization of Polyakov type loops is responsible for the difference between quenched and unquenched finite size effects on the QCD mass spectrum. With a numerical simulation, using different sea quarks boundary conditions, we show that we can align the spatial Polyakov loops in a predefined direction. Starting from these results, we propose a procedure to partially remove the Polyakov type contributions in the meson propagators.
منابع مشابه
ar X iv : h ep - l at / 0 30 90 85 v 1 1 5 Se p 20 03 1 Volume dependence of light hadron masses in full lattice QCD
The aim of the GRAL project is to simulate full QCD with standard Wilson fermions at light quark masses on small to medium-sized lattices and to obtain infinite-volume results by extrapolation. In order to establish the functional form of the volume dependence we study systematically the finite-size effects in the light hadron spectrum. We give an update on the status of the GRAL project and sh...
متن کاملEffective Potential for Polyakov Loops in Lattice QCD
Precise measurement of Polyakov loop correlation is important for finite temperature physics. First of all heavy quark potentials at finite temperature are obtained by measuring twoPolyakov-loop correlation functions. It is already well-known that we can obtain the QQ̄ potential below and above the critical temperature (TC) from this measurement. Due to the nonperturbative effects, however, ther...
متن کاملar X iv : h ep - p h / 06 10 09 5 v 1 9 O ct 2 00 6 The Quantum and Local Polyakov loop in Chiral Quark Models at Finite Temperature
We describe results for the confinement-deconfinement phase transition as predicted by the Nambu–Jona-Lasinio model where the local and quantum Polyakov loop is coupled to the constituent quarks in a minimal way (PNJL). We observe that the leading correlation of two Polyakov loops describes the chiral transition accurately. The effects of the current quark mass on the transition are also analys...
متن کاملSusceptibilities and the Phase Structure of an Effective Chiral Model with Polyakov Loops
Quantum Chromodynamics (QCD) exhibits dynamical chiral symmetry breaking and confinement. Both features are related with global symmetries of the QCD Lagrangian. While the chiral symmetry is exact in the limit of massless quarks the Z(3) center symmetry, which governs confinement, is exact in the opposite limit, i.e., for infinitely heavy quarks. The susceptibilities of the corresponding order ...
متن کاملPolyakov loop, Quasiparticles and QCD Phase Diagram
QCD thermodynamics has been the subject of intense investigations in recent years. In order to interpret corresponding lattice QCD results the Polyakov-loop extended Nambu Jona-Lasinio (PNJL) model is a promising field theoretical quasiparticle model [1, 2, 3, 4] combining the two principal non-perturbative features of lowenergy QCD: confinement and spontaneous chiral symmetry breaking. In the ...
متن کامل