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

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