QCD pressure at two loops in the temporal gauge Original Research Article

We apply the method of zeta functions, together with the n∗μ prescription for the temporal gauge, to evaluate the thermodynamic pressure in QCD at finite temperature T. Working in the imaginary-time formalism and employing a special version of the unified-gauge prescription, we show that the pure-gauge contribution to the pressure at two loops is given by Pgauge2 = −(g2/144NcNgT4, where Nc and Ng denote the number of colours and gluons, respectively. This result agrees with the value in the Feynman gauge.