HYDROGEN UNDER EXTREME CONDITIONS

Liquid and solid hydrogen is considered at high densities (Wigner-Seit z radius r(s) = 1.78) and temperatures of T = 300 K and T = 3000 K. We perform ab initio calculations based on the time dependent variationa l principle where the Pauli principle is included at the level of two- particle exchange. The properties of the system are analyzed in terms of the pair-correlation function and the velocity autocorrelation func tion.