Finiteness of the Hopping Induced Energy Corrections in Cuprates
نویسندگان
چکیده
The paper continues the rigorous investigations of the mean field Green function solution of the effective two-dimensional two-band Hubbard model [N.M. Plakida et al., Phys. Rev. B, 51, 16599 (1995)] of the superconducting phase transitions in cuprates, started in [Gh. Adam, S. Adam, J.Phys.A: Math. Theor., 40, 11205 (2007)]. Discussion of the (δ, T ) phase diagram of the model points to the divergence of the energy spectrum in the limit of vanishing doping δ. Finite energy spectra at all possible doping rates δ are obtained provided the hopping part of the effective Hamiltonian is renormalized with an effective factor pointing to the site-pairs availability for fermion hopping processes.
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