Abstract: Hot Quarks in Lattice QCD
We analyze the quark spectral function at finite temperature in quenched lattice QCD in Landau gauge.
We show that the temporal quark correlator in the deconfined phase is well reproduced by a
two-pole approximation for the spectral function. It is shown that the quark spectral function has two
collective modes that correspond to the normal and plasmino excitations in the chiral limit. The bare
quark mass, momentum, and temperature dependences of the spectral
function are analyzed in detail.