BSEFATBAND

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The BSEFATBAND file contains the NBSEEIG number of eigenvectors of the BSE Hamiltonian.

The file has the following structure:

  rank of the BSE matrix                NBSEEIG
  1BSE eigenvalue    E_BSE      IP-eigenvalue:    E_IP
Kx Ky Kz E_v E_c Abs(X_BSE)/W_k NB_v NB_c Re(X_BSE)+ i*Im(X_BSE)   
...
  2BSE eigenvalue    E_BSE      IP-eigenvalue:    E_IP
Kx Ky Kz E_v E_c Abs(X_BSE)/W_k NB_v NB_c Re(X_BSE)+ i*Im(X_BSE)
...
   NBSEEIGBSE eigenvalue    E_BSE      IP-eigenvalue:    E_IP
Kx Ky Kz E_v E_c Abs(X_BSE)/W_k NB_v NB_c Re(X_BSE)+ i*Im(X_BSE)

where E_BSE and E_IP are the BSE and IP transition energies, KX KY KZ the k-point coordinates, E_v and E_c the eigenvalues of the valence and conduction band, respectively, X_BSE the component of the eigenvector, W_k the weight of the k point, and NB_v NB_c the valence and conduction orbital numbers.

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