Matrix H in Subspace 23 with Dimension 4
H is the Hamiltonian.
Here we set µ=0.
For grand-canonical calculations add -6µ to the main diagonal.
|
-2*h + U |
-(Sqrt[2]*t) |
-2*t |
0 |
|
-(Sqrt[2]*t) |
-2*h + U |
0 |
t |
|
-2*t |
0 |
-2*(h - U) |
Sqrt[2]*t |
|
0 |
t |
Sqrt[2]*t |
-2*(h - U) |