[CP2K-user] [CP2K:18359] xTB + TDDFPT

Mohamed Madjet m.madjet at gmail.com
Fri Jan 20 13:23:04 UTC 2023


Hi, 
I am trying to run a test calculation for xTB + TDDFPT using the input file
https://github.com/cp2k/cp2k/blob/188010d3feada5e8dc47c3a92ea39282ad338499/tests/QS/regtest-tddfpt-stda/CH2O_tddfpt_stda-xtb-s.inp
The problem is that the TDDFPT excitation energy is negative !!
I am using cp2k 9
Any suggestions how to solve this issue 
I am attaching the input and output files.
Thanks
Mohamed

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