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Calculate the matrix elements of a 4x4 matrix given
the following basis states and Hamiltonian where first term in the
Hamiltonian is the hopping
+ + H = =+ (C₁F C²₂₁ +²₁ √ (₂²) + C₂₁ C₁p + C₂ C₁4) +Unit+1^₂)) Hopping i hopp. interaction; int. where ris: Cis Cis is number operator Using the following information: 11)