Journal
PHYSICAL REVIEW B
Volume 61, Issue 24, Pages 16287-16290Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.61.R16287
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We investigate the Hubbard model on a two-dimensional cluster of 18 sites using Lanczos algorithm for different strengths of Coulomb repulsion in the low doping region. Energies and correlation functions are given for half-filling and two holes. In the strong coupling regime we compare our results with the t-J model. We confirm the tendency of holes to repel, although a significant value of the d(x2-y2)-wave superconductive order parameter is measured. These data represent a benchmark for future quantum simulations.
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