  We employ Real-Time Time-Dependent Density Functional Theory to study hole
oscillations within a B-DNA monomer (one base pair) or dimer (two base pairs).
Placing the hole initially at any of the bases which make up a base pair,
results in THz oscillations, albeit of negligible amplitude. Placing the hole
initially at any of the base pairs which make up a dimer is more interesting:
For dimers made of identical monomers, we predict oscillations with frequencies
in the range $f \approx$ 20-80 THz, with a maximum transfer percentage close to
1. For dimers made of different monomers, $f \approx$ 80-400 THz, but with very
small or small maximum transfer percentage. We compare our results with those
obtained recently via our Tight-Binding approaches and find that they are in
good agreement.
