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Hartree‐Fock Theory of the Dimerized Peierls‐Extended‐Hubbard Model
Author(s) -
Mertsching J.
Publication year - 1999
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199908)214:2<343::aid-pssb343>3.0.co;2-t
Subject(s) - hubbard model , hartree–fock method , coulomb , polyacetylene , condensed matter physics , optical conductivity , physics , exciton , ground state , phonon , quantum mechanics , fock space , quantum electrodynamics , electron , superconductivity , doping
The ground‐state electron states, the optical phonon frequency, the exciton binding energy, and the optical conductivity are calculated analytically for the dimerized Peierls‐Extended‐Hubbard model with weak Coulomb interaction in the Hartree‐Fock approximation. Although not strictly justified, the model is applied to polyacetylene with intermediate interaction strength, and the parameters are determined as to fit experimental data.