What is Gutzwiller projection and how do you apply it?

[tom1985]

Hi guys,

Could anyone give me any information on Gutzwiller Projections? What exactly is it, and why is it needed? I guess i am saying, what does it mean to Gutzwiller project a wavefunction, and how do you go about such a process? I have searched around but i have been getting bogged down with quite complicated articles which don't directly explain what it is.

Any help would be greatly recieved.

Tom

 

[nbo10]

I think it just means removing all the double occupied states.