The correlation of molecular rotational and translational kinetic energy in liquid CH2Cl2 and CHCl3

A “molecular dynamics” computer simulation of liquid CH2Cl2 and CHCl3 has revealed a time dependence of the simple kinetic energy correlation function 〈v^2(O)J^2(t)〉/(〈v^2(O)〉〈J^2(O)〉) where is the c. of m. linear velocity and the molecular momentum. This is constant at unity for all t in conventional analytical theory, which is therefore in need of development. The variates and are not Gaussian during the approach to equilibrium.