Renormalization group study of the Hubbard model at the van Hove singular point

Authors
Furukawa, N Honerkamp, C Salmhofer, M Rice, TM
Citation
N. Furukawa et al., Renormalization group study of the Hubbard model at the van Hove singular point, PHYSICA B, 284, 2000, pp. 1571-1572
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
284
Year of publication
2000
Part
2
Pages
1571 - 1572
Database
ISI
SICI code
0921-4526(200007)284:<1571:RGSOTH>2.0.ZU;2-F
Abstract
We study a two-dimensional Hubbard model with a Fermi surface containing th e saddle points (pi, 0) and (0, pi). Including Cooper and Peierls channel c ontributions leads to a one-loop renormalization group flow to strong coupl ing. Various fixed points are found by varying hopping energies as well as Coulomb repulsion. Natures of these fixed points are investigated through r esponse functions. (C) 2000 Elsevier Science B.V.