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Electron-phonon interaction in Hubbard systems

✍ Scribed by J. Keller; C.E. Leal; F. Forsthofer


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
192 KB
Volume
206-207
Category
Article
ISSN
0921-4526

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Renormalization of the electron–phonon i
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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