Functional Renormalization Group Analysis of the Half-filled One-dimensional Extended Hubbard Model

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dc.creatorTam, Ka-Ming
dc.creatorTsai, Shan-Wen
dc.creatorCampbell, David K.
dc.date2005-05-16
dc.date2006-02-14
dc.date.accessioned2026-07-07T06:37:48Z
dc.date.available2026-07-07T06:37:48Z
dc.descriptionWe study the phase diagram of the half-filled one-dimensional extended Hubbard model at weak coupling using a novel functional renormalization group (FRG) approach. The FRG method includes in a systematic manner the effects of the scattering processes involving electrons away from the Fermi points. Our results confirm the existence of a finite region of bond charge density wave (BCDW), also known as a ``bond order wave'' (BOW), near $U = 2V$ and clarify why earlier g-ology calculations have not found this phase. We argue that this is an example in which formally irrelevant corrections change the topology of the phase diagram. Whenever marginal terms lead to an accidental symmetry, this generalized FRG method may be crucial to characterize the phase diagram accurately.
dc.description4 pages, 4 figures, minor changes, final version
dc.identifierhttps://arxiv.org/abs/cond-mat/0505396
dc.identifierhttp://arxiv.org/abs/cond-mat/0505396
dc.identifierPhys. Rev. Lett. 96, 036408 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.036408
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100517
dc.subjectStrongly Correlated Electrons
dc.titleFunctional Renormalization Group Analysis of the Half-filled One-dimensional Extended Hubbard Model
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