Dominant particle-hole contributions to the phonon dynamics in the spinless one-dimensional Holstein model

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dc.creatorSykora, S.
dc.creatorHuebsch, A.
dc.creatorBecker, K. W.
dc.date2006-05-25
dc.date2006-09-28
dc.date.accessioned2026-07-07T07:09:12Z
dc.date.available2026-07-07T07:09:12Z
dc.descriptionIn the spinless Holstein model at half-filling the coupling of electrons to phonons is responsible for a phase transition from a metallic state at small coupling to a Peierls distorted insulated state when the electron-phonon coupling exceeds a critical value. For the adiabatic case of small phonon frequencies, the transition is accompanied by a phonon softening at the Brillouin zone boundary whereas a hardening of the phonon mode occurs in the anti-adiabatic case. The phonon dynamics studied in this letter do not only reveal the expected renormalization of the phonon modes but also show remarkable additional contributions due to electronic particle-hole excitations.
dc.description7 pages, 4 figures and 1 table included; v2: discussion of Luttinger liquid parameters added
dc.identifierhttps://arxiv.org/abs/cond-mat/0605643
dc.identifierhttp://arxiv.org/abs/cond-mat/0605643
dc.identifierEurophys. Lett., 76, 644 (2006)
dc.identifierdoi:10.1209/epl/i2006-10327-x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110976
dc.subjectStrongly Correlated Electrons
dc.titleDominant particle-hole contributions to the phonon dynamics in the spinless one-dimensional Holstein model
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