Approximate expression for the ground-state energy of the two- and three-dimensional Hubbard model at arbitrary filling obtained from dimensional scaling.
VILELA, N. P.; CAPELLE, Klaus; OLIVEIRA, Luiz Nunes de; CAMPO, V. L.
VILELA, N. P.; CAPELLE, Klaus; OLIVEIRA, Luiz Nunes de; CAMPO, V. L.
 Abstract: We generalize the linear discrete dimensional scaling approach for the repulsive Hubbard model to obtain a nonlinear scaling relation that yields accurate approximations to the ground-state energy in both two and three dimensions, as judged by comparison to auxiliary-field quantum Monte Carlo (QMC) data. Predictions are made for the per-site ground-state energies in two and three dimensions for n (filling factor) and U (Coulomb interaction) values for which QMC data are currently unavailable. | |
| Journal of Physics: Condensed Matter |
| v. 31, n. 45, p. 455601-1-455601-10 - Ano: 2019 |
| Fator de Impacto: 2,711 |
| http://dx.doi.org/10.1088/1361-648X/ab32ac |  @article={002960250,author = {VILELA, N. P.; CAPELLE, Klaus; OLIVEIRA, Luiz Nunes de; CAMPO, V. L.},title={Approximate expression for the ground-state energy of the two- and three-dimensional Hubbard model at arbitrary filling obtained from dimensional scaling},journal={Journal of Physics: Condensed Matter},note={v. 31, n. 45, p. 455601-1-455601-10},year={2019}} |