  We study physics at temperatures just above the QCD phase transition (Tc)
using chiral (overlap) Fermions in the quenched approximation of lattice QCD.
Exact zero modes of the overlap Dirac operator are localized and their
frequency of occurrence drops with temperature. This is closely related to
axial U(1) symmetry, which remains broken up to 2Tc. After subtracting the
effects of these zero modes, chiral symmetry is restored, as indicated by the
behavior of the chiral condensate. The pseudoscalar and vector screening masses
are close to ideal gas values.
