Developers Manual:Dielectric function
This is based on G. F. Bertsch et al. Phys. Rev. B 62, 7998 (2000).
For the moment we will only consider the terms of the Lagrangian with .
Equation of motion for
The coupling with the TDKS equation
- Greek superscript indexes: spatial coordinates with implicit sum.
- : cell volume
- : number of electrons