2011/08/31 by Jörg Bünemann, Tobias Schickling, Florian Gebhard · 1 citation
Physics and Astronomy · #cond-mat.str-el
paper · pdf · doi:10.1209/0295-5075/98/27006
published as Europhysics Letters 98, 27006 (2012) · 6 pages, 6 figures
arxiv created 2012/04/27 · arxiv updated 2015/05/29
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.