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CANONICAL TRANSFORMATION OF THE HUBBARD MODEL AND W = 0 PAIRING: COMPARISON WITH EXACT DIAGONALIZATION RESULTS

CANONICAL TRANSFORMATION OF THE HUBBARD MODEL AND W = 0 PAIRING: COMPARISON WITH EXACT DIAGONALIZATION RESULTS

We have recently developed a canonical transformation of the Hubbard and related models, valid for systems of arbitrary size and for the full plane; this is particularly suited to study hole pairing. In this work we show that exact diagonalization results of the one band Hubbard model for small clusters …