Name:BSEBands
Short description: Bands range
Enviroment:(BSK)
Default: (1,max number of bands in s.db1)
Long description
Specifies the band states from which the electron-hole basis of the BSE kernel is constructed. The lower occupied band and upper unoccupied band determine the range in the format
lower band index| upper band index|band states at all k-points will be considered. For bands with a strong energy dispersion the variable BSEEhEny may be utilized to further specify the basis imposing a limit on the electron-hole energy.
Tips & Tricks
A restricted number of Bands near the Fermi level reduces the dimension of the Excitonic Matrix.