In order to calculate some information about the system along the
evolution (e.g. projection onto the ground-state KS determinant,
projection of the TDKS spin-orbitals onto the ground-state KS
spin-orbitals), the ground-state KS orbitals are needed. If the
ionic potential changes – that is, the ions move – one may want
to recalculate the ground state. You may do this by setting this
variable.
The recalculation is not done every time step, but only every
RestartWriteInterval time steps.