Dear alps team

i want ti rephrase my question to make it more precise

I have

fermion hubbard model 2 by 2 square plaquette total number of particle = 3 total spin S= 1/2

need ground state energy

which will be plaquette momentum (Pi,0) and (0, Pi) degenerate

The program I wrote is giving plaquette momentum (0,0) and (0,Pi) as ground state, which is wrong as seen in the paper.

My statements are under. Please correct my statements. I tried very much but could not find the correct ground states. It is trivial task as written in paper.

LATTICE_LIBRARY="/temp/ALPS/xml/lattices.xml"; MODEL_LIBRARY="/temp/ALPS/xml/models.xml";

MODEL="fermion Hubbard"; LATTICE="anisotropic square lattice";

L=2; W=2; Sz_total=0.5;

U=0.5;

CONSERVED_QUANTUMNUMBERS="N,Sz" N_total=3

{ t=1.0;}

Best Regards Khalid Loane