Spectral properties of quarks above T_c in quenched lattice QCD

Abstract

We analyze the quark spectral function above the critical temperature for deconfinement in quenched lattice QCD using clover improved Wilson fermions in Landau gauge. We show that the temporal quark correlator is well reproduced by a two-pole approximation for the spectral function and analyze the bare quark mass dependence of both poles as well as their residues. In the chiral limit we find that the quark spectral function has two collective modes which correspond to the normal and plasmino excitations. At large values of the bare quark mass the spectral function is dominated by a single pole.

arXiv comment5 pages, 3 figures, typos corrected, references added

References in corpus (22)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• Hadron production in heavy ion collisions: Fragmentation and recombination from a dense parton phase
• $J/\psi$ and ${\eta }_c$ in the Deconfined Plasma from Lattice QCD
• Behavior of Charmonium Systems after Deconfinement
• Approximately self-consistent resummations for the thermodynamics of the quark-gluon plasma. I. Entropy and density
• Non-perturbative determination of the axial current normalization constant in O(a) improved lattice QCD
• Hadronic fluctuations at the QCD phase transition
• Charmonium at finite temperature in quenched lattice QCD
• A Lattice Calculation of Thermal Dilepton Rates
• A Family of Equations of State Based on Lattice QCD: Impact on Flow in Ultrarelativistic Heavy-Ion Collisions
• Fluctuations, strangeness and quasi-quarks in heavy-ion collisions from lattice QCD
• Temporal quark and gluon propagators: measuring the quasiparticle masses
• Light Quarks, Zero Modes, and Exceptional Configurations
• Structure of the Quark Propagator at High Temperature
• Investigating and Optimizing the Chiral Properties of Lattice Fermion Actions
• Quark Spectrum above but near Critical Temperature of Chiral Transition
• Novel Collective Excitations and the Quasi-Particle Picture of Quarks Coupled with a Massive Boson at Finite Temperature
• Neutrino collective excitations in the Standard Model at high temperature
• Chiral transition and mesonic excitations for quarks with thermal masses

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