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forum:data:2024:unexpected_mixed_singlet_and_triplet_states [2024/12/04 23:34] Maurits W. Haverkortforum:data:2024:unexpected_mixed_singlet_and_triplet_states [2024/12/04 23:34] (current) Maurits W. Haverkort
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 Running this code produces the following output: Running this code produces the following output:
  
 +<code>
     =============================================================     =============================================================
     ====    written by Maurits W. Haverkort,                 ====     ====    written by Maurits W. Haverkort,                 ====
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     Finished     Finished
 +</code>
  
 The Hamiltonian setup is a system with only a single *d* electron, and one hole in either the *s* or *p* level. When there is a hole in the *s* orbital there are 20 eigenstate (2x10) with 15 of them being triplet states and 5 of them being singlet states at a slightly different energy (G2sd = 0.05 eV). This is the expected behavior. The Hamiltonian setup is a system with only a single *d* electron, and one hole in either the *s* or *p* level. When there is a hole in the *s* orbital there are 20 eigenstate (2x10) with 15 of them being triplet states and 5 of them being singlet states at a slightly different energy (G2sd = 0.05 eV). This is the expected behavior.
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