Matrix H in Subspace 151 with Dimension 4
H is the Hamiltonian. Here we set µ=0. For grand-canonical calculations add -6µ to the main diagonal.
2*h
0
0
((1 - I*Sqrt[3])*t)/Sqrt[2]
0
2*h + U
(I*(I + Sqrt[3])*t)/Sqrt[2]
0
0
((-1 - I*Sqrt[3])*t)/Sqrt[2]
2*h + U
(I/2)*(I + Sqrt[3])*t
((1 + I*Sqrt[3])*t)/Sqrt[2]
0
(-I/2)*(-I + Sqrt[3])*t
2*h + U