@article{1419,
  abstract     = {We study the superconducting phase of the Hubbard model using the Gutzwiller variational wave function (GWF) and the recently proposed diagrammatic expansion technique (DE-GWF). The DE-GWF method works on the level of the full GWF and in the thermodynamic limit. Here, we consider a finite-size system to study the accuracy of the results as a function of the system size (which is practically unrestricted). We show that the finite-size scaling used, e.g. in the variational Monte Carlo method can lead to significant, uncontrolled errors. The presented research is the first step towards applying the DE-GWF method in studies of inhomogeneous situations, including systems with impurities, defects, inhomogeneous phases, or disorder.},
  author       = {Tomski, Andrzej and Kaczmarczyk, Jan},
  journal      = {Journal of Physics: Condensed Matter},
  number       = {17},
  publisher    = {IOP Publishing},
  title        = {{Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model}},
  doi          = {10.1088/0953-8984/28/17/175701},
  volume       = {28},
  year         = {2016},
}