Author Topic: Two-photon absorption using RI-CC2  (Read 97 times)


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Two-photon absorption using RI-CC2
« on: September 08, 2020, 01:41:37 am »
Respected users,

I'm trying to prepare an input file for a two-photon absorption calculation at the RI-CC2 level of theory using "define". But I'm lost actually. As mentioned in the manual, the two-photon calculations can be run using escf but I'm unable to make my way to this part using define. Actually I used "ex" but it leads to rpas, ciss, urpa, ucis methods but there is no option for RI-CC2. Any help would be highly appreciated.

Best regards,