Abstract
A variational Monte-Carlo method, which is a combination of the variational theory and the Monte-Carlo technique is proposed to study the Hubbard model with the Gutzwiller's wave function. An application is made to one-, two-, and three-dimensional models having sites up to 216 (6×6×6) and arbitrary values of U/t (on-site repulsion U and hopping integral t). Contrary to resorting to the Gutzwiller approximation, it provides a virtually exact way to carry out the Gutzwiller-type variational theory and opens up a possibility of further development.
| Original language | English |
|---|---|
| Pages (from-to) | 1490-1506 |
| Number of pages | 17 |
| Journal | journal of the physical society of japan |
| Volume | 56 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1987 Jan 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Yokoyama, H., & Shiba, H. (1987). Variational Monte-Carlo Studies of Hubbard Model. I. journal of the physical society of japan, 56(4), 1490-1506. https://doi.org/10.1143/JPSJ.56.1490