Posted by Jesus Gonzalez-Vazquez on April 27, 2015 at 16:21:49:
Dear all,
I am using the velocity integrals of MOLCAS to calculate the interaction with an electric field, so I need to know the convention that is used there.
Since it is real and antisymmetric I assumed that it is not the momentum itself what is printed. So it should be the derivative with respect to the electronic coordinates, is it correct of you are using a different sign convention?