Generation of d-wave coupling in the two-dimensional Hubbard model from functional renormalization

Autor:	Krahl, H. C., Müller, J. A., Wetterich, C.
Rok vydání:	2008
Předmět:	Condensed Matter - Strongly Correlated Electrons High Energy Physics - Theory
Zdroj:	Phys. Rev. B 79, 094526 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.79.094526
Popis:	Within the two-dimensional repulsive t-t'-Hubbard model, an attractive coupling in the d-wave pairing channel is induced by antiferromagnetic fluctuations. We investigate this coupling using functional renormalization group equations. The momentum dependent d-wave coupling can be bosonized by the use of scale dependent field transformations. We propose an effective coarse grained model for the Hubbard model which is based on the exchange of antiferromagnetic and d-wave collective bosons. Comment: 11 pages, 13 figures, equivalent to published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0801.1773 Zobrazit plný text záznamu View this record from Arxiv