| Issue |
EPL
Volume 98, Number 2, April 2012
|
|
|---|---|---|
| Article Number | 27006 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/98/27006 | |
| Published online | 27 April 2012 | |
Variational study of Fermi surface deformations in Hubbard models
1
Institut für Physik, BTU Cottbus - D-03013 Cottbus, Germany, EU
2
Fachbereich Physik, Philipps Universität Marburg - D-35032 Marburg, Germany, EU
Received:
28
October
2011
Accepted:
21
March
2012
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.
PACS: 71.10.Fd – Lattice fermion models (Hubbard model, etc.)
© EPLA, 2012
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