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Application of the SD Technique for Solving a BCS-Reduced Hubbard like Hamiltonian

Fettes, Werner ; Morgenstern, Ingo ; Husslein, Thomas


We present exact and stochastic diagonalization results for a BCS-reduced Hubbard model. The kinetic Hamiltonian is the same as in the single band Hubbard model with additional next nearest neighbor hopping. The interaction of this model is designed to inhibit superconductivity in the dx2-y2 channel. The ground state of this model is studied by exact and stochastic diagonalization technique. We ...


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