How can Green's function be used to calculate charge density of states?

[Tanja]

Does anybody know how Green's function can be used to calculate the charge density of state?
Thanks
Tanja

 

[AiRAVATA]

Could you be more specific and post an example?

 

[Tanja]

In Phys. Rev. B, 66, 165421 (2002) by Nieminen
they state that rho = - 1/pi Im(G°), without explanation and in
Phys. Rev. B 60, Number 4 (1999) also by Nieminen:
delta rho = -2/pi I am (int (delta G dE))
There must be a way to derive the density of state by Green's functions.

 

[HallsofIvy]

This is really an application of Green' functions to physics. I'm going to move it to a physics area.