Recent content by siver

To avoid BO approx is the main perpose, my system likes to dance. =) Thanks a lot.

Thanks for reply! Sure thing g's (free particle propagators) are different for different particle types. I'm worried if this "system" of two equations eve exist. Maybe they're just independent equations with totally diferent self-patrs for each quasiparticle. And it's pointless to solve them...

Assume we have a solid state hamiltonian, which is ellectrons plus nuclei plus all possible interactions: H = T_{el} + V_{el-el} + T_{n} + V_{n-n} + V_{n-el} Is it wrong to write down a self-consistent system of Green functions for electrons and phonons? G_{el}=g + gSG_{el} G_{ph}=g +...