Section Time-Dependent::TD Output
To be used with TDOutput = td_occup. Not available if TDOutput = populations. Only output projections to states above TDProjStateStart. Usually one is only interested in particle-hole projections around the HOMO, so there is no need to calculate (and store) the projections of all TD states onto all static states. This sets a lower limit. The upper limit is set by the number of states in the propagation and the number of unoccupied states available.
td/td_write.F90 : 511
call parse_variable(namespace, 'TDProjStateStart', 1, writ%gs_st%st_start)