Abstract
Pseudogap phenomena of high-${T}_{c}$ cuprates are examined based on the scenario of the precursor of the strong coupling superconductivity. The ``pairing approximation'' of the T-matrix formalism is used and a full self-consistent numerical calculation is carried out. We show that the pseudogap opens at different regions in the momentum space at different temperatures, which is consistent with the angle-resolved photoemission experiments. We also investigate the dependences of the pseudogap on temperature, the coupling strength, and the hole concentration.
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