Continuum Study of Deconnnement at Nite Temperature Typeset Using Revt E X

Deconnnement and chiral symmetry restoration are explored in a connning, renormalisable, Dyson-Schwinger equation model of two-avour QCD. An order parameter for deconnnement is introduced and used to establish that, in the chiral limit, deconnnement and chiral symmetry restoration are coinci-dent at T c 150 MeV. The transitions are second order and each has the same critical exponent: 0:3. The deconnnement transition is found to exhibit sensitivity to the current-quark mass. f and m change by no more than 10% for T < 0:7 T c , however, as T ! T c , thermal uctuations cause the pion bound state contribution to the four-point quark-antiquark correlation function to disappear.