Niles
Dec11-10, 09:38 AM
Hi
Say I use my Hamiltonian to find some propagator G(\uparrow,\omega). Now I wish to find G(\downarrow,\omega). Since the calculations are lengthy, I thought about just replacing the variable \uparrow with \downarrow, but I am not sure I am just allowed to do that. In which cases can I, generally, substitute?
Say I use my Hamiltonian to find some propagator G(\uparrow,\omega). Now I wish to find G(\downarrow,\omega). Since the calculations are lengthy, I thought about just replacing the variable \uparrow with \downarrow, but I am not sure I am just allowed to do that. In which cases can I, generally, substitute?