The calculation of frequency-dependent polarizabilities using current density functional theory

The formalism of Colwell, Handy and Lee for the calculation of frequency-dependent properties using current density functional theory has been implemented using local, non-local or hybrid functionals. This theory has been applied to the calculation of frequency-dependent polarizabilities and dispersion coefficients in a variety of small molecules. The results obtained are in good agreement with experimental data. The effect of the terms which depend upon the current density is found to be small.