[CP2K-user] position operator matrix

Xiaoming Wang wxia... at gmail.com
Sat Apr 6 01:37:45 UTC 2019


Hi,

In qs_moments.F line 1212 the position operator matrix reads

eigrmat(ispin)%matrix%local_data(:, idim) = 
CMPLX(op_fm_set(1, ispin)%matrix%local_data(:, idim),
-op_fm_set(2, ispin)%matrix%local_data(:, idim), dp)

If I change the minus sign to plus, would then the 
off-diagonal elements be the transition
dipole matrix elements, which is 
mo_coeff^T*CMPLX(cosmat,sinmat)*mo_coeff?

Best,
Xiaoming
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