Meson correlators in finite temperature lattice QCD

We analyze temporal and spatial meson correlators in quenched lattice QCD at $T>~0.$ Below $T_c$ we observe little change in the meson properties as compared with $T=0.\mathrm{}$ Above $T_c$ we observe new features: chiral symmetry restoration and signals of plasma formation, but also an indication of persisting “mesonic” (metastable) states and different temporal and spatial “masses” in the mesonic channels. This suggests a complex picture of QGP in the region $(1\mathrm{}–{1.5)T}_c.$