Dear developers,

I want to simulate the fermion Hubbard model using dirloop_sse, how can I write the parameter file? I did the following:

LATTICE="square lattice";

L=8;

W=8;

MODEL="fermion Hubbard";

U = 5.0;

V = 0.0;

t = 1.0;

T = 0.05;

SWEEPS=2000;

THERMALIZATION=5000;

{ mu=0.0; }

Then an error occured: Cannot convert fermionic operator to a bosonic matrix. What's wrong with it? If I want to measure the structure factor or correlation function, do I need to add the following in the parameter file?

REPRESENTATION="SSE";

MEASURE[Correlations]=true;

MEASURE[Structure Factor]=true;

MEASURE[Green Function]=true;

Best,

TaoYing

Tao Ying,

Ph.D candidate,

Physics department

Harbin Institute of Technology