CORRELATION-FUNCTIONS AND SUSCEPTIBILITIES OF THE DP MODEL

Correlation functions and susceptibilities of the one dimensional dp model with large on-site Coulomb repulsion on copper site have been calculated. Critical exponents of the model at the ground state is estimated by finite size scaling in some parameter regions and fillings. The dp model with large DELTA(= epsilon-p-epsilon-d) may be equivalent to the large-U Hubbard model. The model with small DELTA gives a metallic state at the half-filling. The superconducting susceptibilities are weakly temperature dependent if the DELTA is small. This behaviour is also observed in the two dimensional lattice.