Matrix H in Subspace 55 with Dimension 8
H is the Hamiltonian. Here we set µ=0. For grand-canonical calculations add -6µ to the main diagonal.
2*U
-(Sqrt[3]*t)
0
Sqrt[3]*t
0
0
0
0
-(Sqrt[3]*t)
2*U
0
0
0
0
t
-t
0
0
U
0
-2*Sqrt[3]*t
0
Sqrt[3]*t
-2*Sqrt[3]*t
Sqrt[3]*t
0
0
3*U
0
0
0
3*t
0
0
-2*Sqrt[3]*t
0
0
0
0
0
0
0
0
0
0
U
-t
-2*t
0
t
Sqrt[3]*t
0
0
-t
U
0
0
-t
-2*Sqrt[3]*t
3*t
0
-2*t
0
2*U