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The Ordering Types in the Extended Hubbard Model with Electron—Phonon Interaction

✍ Scribed by L. A. Manakova; S. P. Ionov


Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
621 KB
Volume
121
Category
Article
ISSN
0370-1972

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We calculate the electron-phonon vertex in the two-dimensional Hubbard model by a strong coupling approach based on cumulant expansion. The role of the on-site Coulomb interaction on the coupling of the electrons to the Holstein phonons is investigated in different regions of the Brillouin zone. The