| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go - Brazil
[2] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 - USA
[3] Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF LOW TEMPERATURE PHYSICS; v. 180, n. 1-2, p. 168-179, JUL 2015. |
| Web of Science Citations: | 6 |
| Abstract | |
An ultracold Fermi gas with a zero-range attractive potential in the unitary limit is investigated using variational and diffusion Monte Carlo methods. Previous calculations have used a finite-range interaction and extrapolate the results to zero-range. Here we extend the quantum Monte Carlo method to directly use a zero-range interaction without the need of an extrapolation. We employ a trial wave function with the correct boundary conditions and modify the sampling procedures to handle the zero-range interaction. The results are reliable and have low variance. (AU) | |
| FAPESP's process: | 10/10072-0 - Computer simulations of quantum many-body systems |
| Grantee: | Silvio Antonio Sachetto Vitiello |
| Support Opportunities: | Regular Research Grants |