1108.4284 (Jörg Bünemann et al.)

Variational study of Fermi-surface deformations in Hubbard models    [PDF]

Jörg Bünemann, Tobias Schickling, Florian Gebhard

We study the correlation-induced deformation of Fermi surfaces by means of a new diagrammatic method which allows for the analytical evaluation of Gutzwiller wave functions in finite dimensions. In agreement with renormalization-group results we find Pomeranchuk instabilities in two-dimensional Hubbard models for sufficiently large Coulomb interactions.

View original: http://arxiv.org/abs/1108.4284