[molpro-user] quadrupole polarizability

[Yurii Vlasov]

*Dear Molpro Community,

I have a question concerning the implementation of the quadrupole
polarizability calculations in Molpro 2009. What formula is programmed
there:

C_ij,kl=1/3*SUM((<0|Q_ij|n><n|Q_kl|0>+**<0|Q_kl|n><n|Q_ij|0>**)/(En-E0),n)

or

**C_ij,kl=SUM((<0|Q_ij|n><n|Q_kl|0>+**<0|Q_kl|n><n|Q_ij|0>**)/(En-E0),n)*
*


I would be very appriciated, if you could answer.
Thank you in advance.
Best regards, Yurii Vlasov
**
*
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