Both perturbation approach in the Hubbard operator representation and the exact Lehmann representation proves that the electron quasiparticle in SCES has spin S=1/2, electric charge e, QP energy and QP spectral weight split over various QP bands. General theory and its application to the hole doped CuO2 layer are considered.
PACS numbers: 71.10.Fd, 71.20.Be, 71.27.+a, 71.15.Mb
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